Taproot is a couple of years old and is already mature enough. If you use a proper software such as bitcoin core you won't have any issues or concerns about bugs. The problem is with untested or little tested implementations that are sometimes unpopular too.
You can't say something is mature enough when it's been activated few weeks ago.
Maybe you have some top secret information I don't know, so please tell me what wallets could be used with Taproot few years ago in bitcoin mainnet?