I installed it on my HTC one and have used the exact same wallpaper and layout ever since. Change is scary and let's be real.
Who the ACTUAL fuck pays attention to the launcher they are using. They find one they like and then unless something breaks they forget they are even using one.
Proton is well past the good enough break point.
Honestly proton is a good choice to start for replacing most of your google/Microsoft suite.
Email, vpn, password manager. Etc. sure it's not the literal best option on the market. But as far as one stop shop. Its good enough.
The privacy and security standards are acceptable and strikes a good balance between secure and obnoxious.