Everyone expects the Bitcoin prices to go up for ever, so when the correction occurs (similar to what happened in 2014-15 and 2018), most of the users are not prepared. Given the fact that Bitcoin prices have gone up by 400% during the last 12 months, there is some possibility of a correction occurring in the next few months.

As Theymos pointed out, the tax increases can't be implemented retroactively. So for sales being made up to March 31, 2022 the new taxes are not applicable. If you were having plans to sell some of your coins in the next 2-3 years, then it won't be a bad idea to do it before the date that I mentioned earlier. Two reasons - 1. taxes are going to increase from 1st April 2022 and 2. Republicans are unlikely to win the 2024 elections.

Also, there is a proposal from the Democrats to tax unrealized capital gains. This is where it gets really scary.