Yes, but the management of them through the process matters. When he's saying, "I've trimmed twice and am down to 35 shares, " I'm guessing that's more than cost basis taken. Would it be great to always maximize? Of course. Nobody's going broke free-rolling, though. That's the necessary occasional de-risking.
Sure, assuming the funds from those sales are going into cash or SPY or something. Not so much if they're just going into a different frothy stock.
Selling BLDP high last time didn't do much good if you just used those funds to buy QS at similar frothiness.
Same thing for all the others. I sold high on RIVN last time but I used some of that to jump into the SHOP party that everyone was having fun on.
Not trying to be a debbie downer, just trying to provide some perspective on these types of names. I had a $30k play account last time that I was totally fine with losing. At the peak I had that sucker up to $300k so even though I walked away net positive overall once the dust finally settled (but still a whole lot less than $300k), some of those huge losses still really hurt.
Just seems like we're hitting that point again where a lot of folks had money that was play money (whatever that may be for each person) that has now turned into real money. And maybe they've thought to themselves "hmmm, if this is going so well with the play money account, maybe I should start moving some of my real holdings into these names". What's the worst that could happen, a 15% drop?
Again, speaking from experience here.