It's called: Value investing, technical investing, speculating.
'RobinHood' style 'investing' means that people have access to 'data' which makes them feel 'informed' but for the most part they are making totally random guesses, which implies a kind of distortion of self awareness.
In other words - they are RobinHood fish handed to the sharks who have more information, knowledge, and leverage via tech, other services and especially access to capital.
But - with the underling caveat that as stocks go up overall, even random trading can yield what is perceived to be a slight win over time as stocks overall go up in value.
This has the effect of actually making a lot of small winners and having retail investors believe they are actually making 'smart bets' when really they are just riding the market trend.
Compound this with the fact there is a lot of noise in every direction, and that random bets sometimes do turn out relatively well - and a 'single win' will be interpreted by winners as due to 'intelligence' when really it was just random (this happens to everyone, even institutional investors who always over-attribute their wins) - making people feel they are 'smart'. Of course, the 'bad bets' are attributed due to 'bad luck' and not 'bad investing'.
With slack in the economy and enough of the proles playing games on the market, it can really do things to stocks (Tesla, Nikola, Game Stop obviously).
In the end this means that it's hard to fathom if it's actually good or bad for companies, and that the analogy is a little bit like playing poker with better players but the pot just magically grows a bit without anyone noticing (i.e. market rising).
It also creates a little bit of Ponzi-ish mania reminiscent of 2000 where the saying used to be 'when your cab driver is giving you stock tips it's time to get out' with the major caveat that the Fed is creating so much liquidity that is getting dumped into stocks ... that it actually just might be rational to pick stocks randomly and even trade them, because the 'harm' of playing against sharks is less worse than not playing at all, and that being 'in' the market, even on roughshod terms, is better than holding cash.
It's a whole pile of weird dynamics playing out at the same time, and I hope it ends well.
Edit: I was corrected by a commenter below, I may have misappropriated 'Value Investing' which can be a form of technical investing, but subject to interpretation i.e. Warren Buffet doesn't make a pure technical analysis of 'under valuation', he's definitely looking at the management team, the viability of the company etc. but of course looking at that in the context of pricing itself. No investment strategy can avoid deferring the price of the stock as many 'great companies' are clearly overvalued at any given time.