All news related to Bitcoin will sooner or later be passed on to altcoins and then there should soon be a big rise in these cryptos, even more so with Bitcoin's volatility recently.
completely depends on the outlook of bitcoin dominance.
currently bitcoin always dominate, every inflow of capital always going to bitcoin whether ETF or other markets. moreover, I think trump is hyping up US' altcoin right now, not some other random altcoin.
probably hyping up his portfolio from his WLFI dapps as well which mostly consist of select few high market cap altcoin, just be careful because the altcoin rally might be really really different.