Idk how big of a deal it would be to just one time buy some KYC bitcoin if it's like 3 million sats and I plan to HODL it.

If you buy bitcoin with KYC, there will be a record of it that an authority or anyone else could refer to. Regardless of what happens to it afterward. In my opinion, depending on where you live, there's no problem as long as you keep an eye on the regulations. What's certain is that you will always ...