i know im silly for this but this is part of steam’s charm for me. i like that it just feels genuine like steam isn’t trying to lull you with all the tried and true marketing and UI best practices. it feels very practical, like using old windows 9X UIs.
probably boosts user performance for users who have more experience like you but slightly hinders new users who haven’t got the hang of it yet
if steam prioritizing retention of growing userbase is one of its goals, it’s not a bad strategy in my opinion