I have nothing against wanting to invest in altcoins. But I do believe that only very few and close to little altcoins will reach new ATHs. Maybe they will just rise for a few times but ethereum or xrp may not reach their ATHs again. There are other reasons why one would want to invest in altcoins like transactions purposes but I believe if you are hoping to see a coin reach new ATHs this cycle, it will only be bitcoin.
Not opposing people's desire to invest in altcoins is a form of support for freedom in the crypto space.
If people can't afford Bitcoin, they can still partake in altcoins as a first step towards the ultimate goal of Bitcoin.
As strong as well-known altcoins like Ethereum or XRP and others are, they are not as strong as Bitcoin.
Regarding all high time, Bitcoin is still open to opportunities to continue to occur in each period. So what about altcoins, no comment from me. Open space to analyze further.