The Runes can be the problem in the next bullrun. I have not seen the fee rate gone up to 2000 sat/vbyte before. I do not think that has happen before in history of bitcoin. If Runes hype come again, it will be another network spamming.
AFAIK, in 2018 we had a similar period when the fee went crazy like 500sat/vb for a little longer than what we had witnessed after this halving but over 1200sat/vb is the first time ever.
The inscriptions should be moved to Layer to or else this high fee and congestion will never come to an end, we have to remember this much of congestion is just only dew to a few projects, imagine everyone going after brc20 projects due to this success?
That would lead to total mess.