This will change soon. The IRS has details about the large traders, which it has got from Coinbase. It might decide to prosecute a few traders and make an example out of them. The others will quickly fall in line.
Prosecutions require evidence.
The IRS need to do a much better job than usual to actually present any real evidence. There will be a high number of situations where the evidence simply doesn't exist to conduct a successful prosecution. This could be very resource consuming for the IRS with little success.
It is simply stupidity to use Coinbase {regulated exchange} and then think that the IRS will not hunt you down, if you did
not pay taxes on your trading. I think most unregulated exchanges and also person to person trades cannot be traced and
people think they can get away with that. Try to explain to the IRS, how you bought that Tesla with your average weekly
wage. They will do a full audit on your finances and you will have to explain where that money came from.