I use over a dozen Pionex Grid Trading Bots which use USDT stablecoin and fees. On a 'hot moment' there may be 4-5 triggered and USDT gets a lot of use.

Agreed. I use many of the Binance Earn facilities. These accumulate rewards daily. That adds up quickly if you have 60-80 coins there, some with several different time periods. I actually sum them monthly, manually, using Excel and enter into Koinly at the end of each month. The overall tax discrepancies will average out to little effect but it's a vast amount of continuous work which I could not do if I was not retired. I had one shitcoin in a private wallet that staked 750,000 microamounts in a year and crashed my Koinly account. I had to sum those manually too and Excel was not happy.

I completely agree with this having just found 73000 micro transactions from my $100 experiments in using Kucoin's bots (which all lost money). I now find myself unable to use Koinly to file my taxes unless I pay a staggering $900 to upgrade and have the system factor them in. Since seeking advice on this problem I've come across several people on Discord channels who had this same problem albeit from staking etc. Similarly, many people on reddit were requesting Koinly do something about this a couple of years back. However, seeing as no solution has been proffered other than to suggest manually merging the transactions (73000!) I, regrettably, find myself unlikely to use Koinly again.