Well, fads normally don't last only a couple of days. At least some weeks, and most of them a couple of months. But not more than half a year, normally.

BRC-20 and other small text-type transactions are already on a downward trend since at least a week, so they were probably a very short fad. The peak seems to have been May 7, with 314988 small text inscriptions. Now it went down to 200-240K per day. The reason that the total size of all inscriptions is still high seems to be that we see now a little bit more slightly bigger inscription transactions (probably NFTs) again.

But transaction fees are returning to reasonable levels again (I consider everything reasonable which lets you send BTC for less than $2-3, BTC was always bad for microtransactions, but ok for $50 txes and more). Yesterday they fell for a moment below 14 sat/vbyte, the first time in 2 weeks, that's around 50 cents for a standard Segwit transaction. I believe it will be difficult to get to 1 sat/byte again, but that fee level anyway was mostly reachable in bear markets and we're now very likely in the first phase of a bull market.