Right, I understand that can appear to be tightening, but the IRS guidance is exactly the same since 2014, as are the penalties. They're now more actively alerting US taxpayers they need to pay taxes on their "virtual currencies." But the US taxpayer has always had that obligation, and the IRS is now starting to more visibly enforce it. They've been doing so less visibly as well. With so much more digital asset economic activity, there's that much more taxation, and that much more enforcement. The code is the same.
American crypto exchanges were actually reporting predating that announcement; they had to in order to not get shut down. Thoughtful people knew that certain regulation would have to be met from the beginning, but that memo wasn't universal and there's no one who goes door to door with the facts for hungry home speculators. There's likely to be a continual wave of retroactive enforcement for some time. That's why most sincere people in the space have been paying any required taxes generated by their activity starting for the year 2015 at the latest.
Incidentally, bitcoin hasn't been considered a security by the IRS yet, but the infrastructure bill that just passed has a whole sea change of new regulation for the space. I don't feel I've been informed well enough yet to comment much regarding macro implications. But there is something in there that could effect the latest buzzwords to go media viral: NFTs. Securities-related Know Your Counterparty and Anti-Money Laundering regulations that will be in effect starting in 2023 may apply to NFT sales, for any seller. That could have a real impact. You would need the EIN or social security number of your buyer.
We could call this tightening or a crackdown, but I think it also might be fair to call it reigning things in to prevailing standards. I don't really know. All this revolves around interesting questions about how the standards continue to be established for what constitutes a digital security vs digital property/currency.
As to the ICOs crackdown, it was nice to see regulators actually take real action on straightforward and often inept securities fraud. They were enabled by capability advances that weren't as feasible with bitcoin alone. They were old grifts cycled around again for a round of digital "innovation," so they were nipped in the bud pretty quickly. These kinds of fraud will probably spring up at every stage of the digital asset technology development cycle. The noise can be a bit maddening, and I can understand your general sentiment.