I think we were over 1 trillion dollars a long time ago as well, this is not the first time ever. Back in those days bitcoin may not be this much, it was only 20k obviously as we all know, but considering things like ethereum at 1.5k, xrp at 3+ dollars, and many others are all on their ATH prices, that meant that we broke over 1 trillion dollars.
Now we have broken over 1 trillion dollars again, but we didn't broke over it with alts, we did it mainly with bitcoin reaching 37k+ levels, which helped us, if you look at ATH prices of coins, most of them (almost all of them) didn't broke over their ATH prices, which is why we are not really at a big place just yet, we are going to be over 1.5 trillion dollars or so when we reach ATH with alts as well, that would allow us to reach maybe even 2 trillion dollars, because that would be a collective increase and not just one coin.
Nope. This was the first time. The previous high mark from late 2017/early 2018 was $800-something billion. It didn't get close.