When talking about bitcoin, I will definitely say "yes", because bitcoin is the most popular cryptocurrency and the price of bitcoin is currently relatively low and very suitable for long-term investment. but when talking about "dip" I also want to recommend MATIC because in yesterday's price drop the price of MATIC dropped dramatically compared to bitcoin and other big atcoins, so I think this is the right time to buy MATIC.
Matic price dip more than other altcoins because it's among one the tokens been targetted by SEC. I will stay away from buying it because the price might dip further. I don't think the correction is over, we might see more dips if Bitcoin retest $20,00 before month ending.
During time of heavy bloodbath in the market, it's no wise to buy altcoins because you don't know if they'll dip further or be able to recover from the dip. Altcoins rely on Bitcoin which means if bitcoin was to continue falling then altcoins will follow as well.
Although this isn't the altcoins board to discuss other cryptocurrency that isn't bitcoin but still we can make mention of them in discussion. Therefore I don't see any problem with what the op did by making mention of matic but I won't invest in it not at this moment particularly.