Ikr, tags are so annoying especially in role play games

The problem with that is even if you joined for a year, you could still be, like, 5 years old. That's why ROBLOX uses your birth date to decide if safe mode should be turned off. When your 13+, safe mode will be turned off.
And, about the tags... the tags might be annoying but they help younger kids be kept safe from people who swear.

I hope this answers your question.