Part of the issue with kyc is having your identity linked during the initial purchase. In the gov’s eyes, it means you either still hold the coins or you’re liable for taxes on the capital gains.

Taxes aside (pay your taxes lol), it’s also a record of your Bitcoin buys which, if leaked, puts you at risk of theft etc.

It’s without a doubt better than nothing and a good idea for getting started. Just maybe best to keep those sats separate from a non-kyc stack you put in cold storage.