I have a lot of sympathy. The situation sucks, and some have it worse than others. Expats and people with important relationships in other countries have it especially bad. I understand that. I have expat friends that have had a really rough time too.
That being said, it sucking is not the same as years being wasted. You still have opportunities to do plenty of other stuff. The only reason these years would be wasted is if you do not try to adapt. Are they going to be among the best years of your life? Probably not. Are they necessarily wasted and "stolen"? No.
Covid having a low impact on your life personally is missing the mark on a couple of levels. The low impact might very well be connected to the restrictions in place. In an alternate timeline where restrictions never happened, you might have been equally or more frustrated over the lack thereof as you lost a loved one.
How do you quantify how much discomfort for the general public is worth it to save X amount of lives? You and yours might have gotten dealt a shitty hand because of the border shutdowns, but on the aggregate I think the restrictions have been reasonable.