I know many will say the time ended, we must have bought before 15 days but I think this is the best time. Before couple of weeks ago, BTC was around $4k and which is why altcoins are overpriced in term of BTC. Now that BTC has gained price, altcoins price has decreased in term of BTC and now is the best time to pick your favorite altcoin because right after the BTC ride, altcoin will also follow the trend.
Part of your opinion is true, because I feel for myself impact of increasing bitcoin and decreasing altcoin prices from BTC, but we still have to attention to some important things so that we aren't trapped when buying and selling coins that we have. for example, paying attention to the future of the project, however, if we buy coins at low prices, but with an unclear future it will only harm our finances. may be good advice