No, it’s not excuses, it’s just reality. It’s hard. Does that mean people shouldn’t try to do better and make things better? Of course not. Being better and doing better is hard, and we should do it anyway. That kind of personal growth is central to the human experience, or it ought to be.
The thing is, just because people aren’t doing better in the area that you understand and care about doesn’t mean that they aren’t in other areas that you may not know about.
For example, someone who is stressed out and overburdened with work may be using all of their available energy to be a better parent and make sure that their child is raised in a healthy and emotionally stable home. If that doesn’t leave room for people to support FOSS and privacy friendly browsers that’s ok.
Just be the best human you can be every day and don’t beat yourself (or others) up for not being perfect.