My proposition is that in Europe, if you're making tier 3 salaries, your life is actually shit. You're working for American companies with shitty work life balances, "we're making the world a better place" hellholes that layoff hundreds of people whenever there's a chance. Working full remote for a nice European company with proper work life balance and tier 2 salaries is way better.
I can offer the following data point. I work for one of those American companies (Google) based in Europe (Zürich) and I've never had better work-life balance in my 25-year career. If anything, I now have much more control of where I'm located, how frequently and for how long I come into the office, which hours I do and don't work etc than I've ever had. I basically have full flexibility in how I arrange my work around my life.
My only slight grumble is that I only get 25 days' annual leave instead of the 30 days I got at a previous location (same company). For reference, the legal requirement in Switzerland is 20.
> layoff hundreds of people whenever there's a chance
It may come as a surprise, but all those companies are still subject to labour laws of the countries in which they operate.