I guess alt/usdt prices will rally along with bitcoin but be careful about alt / btc, I think it's more likely to fall.
altcoin is the best way to earn more bitcoin, but we have to know when is the right time to buy it and I don't think it's time yet.
when BTC grows the altcoin should respond to its growth and follow the growth that occurs. unfortunately now we don't see that. alt / btc or alt / usdt will be the same, indeed usdt will better balance the value we get from the fast-moving BTC now. we could be trapped in decline.
I think we just need to be patient. Indeed, there are many altcoins whose prices fall against bitcoin but these days have started to recover. Accumulating and buying good coins at a time like this, I think it's good as long as the coins we buy are in the top 100 coinmarketcap but we have to be careful because there are usually a number of altcoins that actually die and the project stops