It's the other way around. In general, you should choose Linux over Windows, and only if you really need it, use Windows. Also, if you need Windows just temporarily for some things, consider running it in a VM inside Linux just for those occasions.

Why - well, to keep it short, Linux' main weaknesses for common users (difficulty, compatibility) are gradually fading away (they are already almost non-existent these days if you have mainstream hardware and a mainstream desktop distro like Mint, Fedora, Ubuntu) while Windows' main disadvantages (forced stuff like cloud/AI integrations/ads, complete disregard of user's privacy, increasing security issues due to outdated stuff being kept in the OS for backwards compatibility reasons, and many more things) keep on increasing at a rapid rate. Microsoft has a big business interest in getting all users locked into their cloud ecosystem, locked into a subscription with ever-increasing monthly fees, and give up control over their own computer and their digital privacy. They want users to pay them with their data AND monthly subscription fees. MS Office, for example, will probably not have a pure locally runnable version after 2029 (or around that year) anymore. This Microsoft train is heading towards that wall. And the speed is increasing. And tons of users are still inside that train. And Windows itself likely won't be spared either. They want you to pay monthly for M365 and they will get their customers there, eventually.

Furthermore, by supporting Microsoft you're supporting a very unethical company. They partner with big surveillance companies like Palantir and they are an active participant in the despicable ad-tech-industry (the industry that's spying on literally everyone and buying/selling/storing tons of intimate user data even though it's illegal in most countries), they partner with the military, law enforcement and other things. Also, they are a US company, and we all know how US politics is like these days, and this can have a big influence on how "trustworthy" US-based proprietary software will become in the near future. Since 2020, arguably no US-based proprietary software or online service is trustworthy anymore anyway, because of the CLOUD act, which is current law in the US - it means that the US government has access to any customer data stored by a US-based company, regardless of where on Earth they are storing it. This means the often-used claim "my data stored by that US company is safe because it's in a European-based datacenter!!!!11" is false since at least 2020, because MS is forced by US law to grant technical access to customer data to their government. Also, all previous "data transfer privacy agreements" between EU and US like Privacy Shield were all a joke and were dismantled in courts already. So there's currently zero legal data protection - any data you send to a US company is theirs to do with as they please, essentially. And even if there were any meaningful legal data protections left, those big tech companies might still simply ignore that data protection law and only face minor or no fines at all.

So this is not a baseless claim. Just because I might keep some statements short doesn't mean that there are no backing arguments. It's a very good idea to reduce your dependency on Microsoft's (or in general, US-based) proprietary software and services. For multiple reasons. Digital sovereignty has never been more important than these days. It has always been important but it was maybe too abstract in the past for many common users to realize. They are slowly starting to realize now that dependencies on proprietary software from any rogue regime (and the current US regime also falls into that category now) are not great to have. Plus, there is Microsoft on its own already putting ever-increasing user- and customer-hostile features into their products. It's like being in an abusive relationship (as the one being abused). It's just not good for you long-term.

So as a user, you should instead choose software which allows you to retain your digital sovereignty and control over your own computing, and simply not take all that abuse. Linux- or *BSD-based OSes with their open/transparent development models, fork-able/modifiable code bases, permissive licensing and essentially zero unwanted crap like adware, spyware, bloatware etc. offer exactly that. And because mainstream Linux distros have already become so easy to use these days, there are almost no reasons not to start using them.