The behaviour of those who run away from the high fee is completely understandable. The funny thing is that the individual wisdom of running away from 1.5% fee leads to collective stupidity causing the current stall of the bull run. But I am not convinced that the fee is the main reason for these outflows. I've read some opinions that most of them didn't go in any other ETF company. May be the reason is that there are many people/companies that have had their funds locked up for years at a loss and are now rushing to release them at a very good profit.

A while back I quoted a long twitter thread where some pretty shady dealings of DCG/Genesis, investigated by SEC were discussed. It was funny for me that Boidom refuted them, as made up by me?!? Then what about the hundreds of pages on Internet? Are they also made up by me?  I will add just one quote from the many written on the matter:

Back in November, DCG's CEO Barry Silbert seemed optimistic that the company could weather the storm. Since then, however, things seem to have gotten worse because the company is under investigation and it has closed down its wealth management division called HQ this month. Moreover, Genesis sent home 30% of its staff this January after making a 20% employee cut in August last year.
https://www.bankfrick.li/en/news-and-insights/the-dcg-genesis-and-grayscale-saga-explained

But of course for each train there are passengers. There will be people, (later Boidom confessed he is a Greyscale investor), who will keep money in Greyscale, believing everything is fine. So, Greyscale won't go down to 0BTC, probably. The real bull run will start when they stop flooding the market with thousands each day.