Not surprising yet people now is putting their interest to Bitcoin which causes for its dominance rating to hit up that high but eventually there would be a market reversal or lets say there would be a day on when alts boom once again.We have seen this things for how many times but for now,confidence of people majorly on bitcoin itself.
There is no guarantee that there will be a market reversal for altcoins.
Too many people found themselves burned when they crashed more than Bitcoin, and it's clear they were overhyped so much that generally speaking few people have confidence they have any real-world uses. There's also a feedback loop, 'why buy when others aren't buying?', all the marketing, 'partnerships' mean nothing as everyone knows it's all a scam. It won't be easy to get a repeat of the 2017 altcoin/token bull market. BTC dominance on CMC is 69.9% now, it's likely to go back to >80% levels unseen since early 2017.