From the ground view its hard to tell whats going on overall and if its a buying opportunity or not. Some still think alt coins can come back and have a place in the market and some believe they never should have existed, a form of digital heresy.
Buy the Dip is extremely valid advice however its a shortened phrase thats lost its qualifier. Apparently this is a common thing to happen and sometimes advice is reverse of what commonly society has come to understand from that phrase. However in this case we can still see the logic is fairly plain that buying into a dip even at a 'bad price' is ok so long as the product itself is valid. Or in other words you get a bad price or risk a bad price but this still remains a reasonable hold within a larger greater overall bull market on the long term time frame over years.
https://www.investopedia.com/terms/b/buy-the-dips.asp