A few quick thoughts. When BTC is 1m, these movements (which seem big in the current perspective), will be almost unnoticeable blips on the graph.
Having said that, it is of course always nice to hit a new ATH, but we have so much more to come.
I have had a few PMs asking me about what price to buy, and any alts to recommend. I don't have time to respond, but would urge anyone with those questions, just to post it on this thread - no need to be shy!
So, what price to buy BTC at? I would say, its far more important just to buy (and HODL) than to try to predict will it fall back below 70, 69, 65, or whatever. Hodl time really is the cure of any BTC purchase which goes underwater for a period of time.
I have been buying regularly since 3K, and as of now not a single satoshi is underwater. So, if on my next buy I buy at 75, and it drops under, I don't worry in the slightest.
As to why are only some alts pumping, not others, I would say the biggest moves would be around solid alts where there may have been concern about regulatory breaches. That includes Uniswap, Filecoin as good examples. And of course the smaller and more useless alts and memes etc all get a boost from BTC's rise also - a rising tide float all boats (although eventually, a broken boat will sink even in a rising tide...)