Did you even read the article? There is a process and the changes outlined in the article are a change to the process to make it less game-able by economic migrants posing as refugees. Namely
anyone who first arrived in Canada after June 24, 2020, will not be allowed to make a refugee claim after one year
Which makes a lot of sense, because it impacts approximately 0 genuine refugees (they either get refugee visas before arrival or tend to apply as soon as they arrive) and cuts out lots of economic migrants posing as refugees (who tend to arrive on a temporary work permit or student visa and want to extend their stay).
The article is NOT about abolishing the right to apply for asylum.
Holocaust story you shared is sad but has nothing to do with this specific change. I find it really disturbing that you cheapen the unique suffering of holocaust victims to score points here. Holocaust victims, or indeed anyone genuinely needing asylum, would not have waited over a year to apply.
There has to be a cutoff for any change. I think there is a genuine argument to be made from a rule of law perspective that no law should have retroactive effect. However, considering your posts in this thread I have a feeling you wouldn't be satisfied with making this law not retroactive anyway.