The thing is though, the long term economic viability of GRC is basically zero, simply due to the fact that it essentially allows anyone who runs any of these BOINC projects to print money for themselves.
This is a generic problem across the various projects that try to do this sort of "proof of science" type approach. Whoever controls the dataset being crunched essentially controls monetary supply. It's very hard to come up with a useful problem for people to crunch on which is provably fair, which is why Bitcoin just hashes random nonces.
Of course these markets are irrational, look where DOGE was able to get, so maybe GRC goes 10000x and everyone gets a Yacht, but as the total market cap increases, the likelihood of bad actors in the system goes up as well, and GRC is fundamentally defenseless against this type of attack.
That said, it's an awesome project, and IMO earning GRC is quite a bit more fun than watching your numbers go up on some website's scoreboard. If you want to show your support for BOINC miners, by all means, buy up stacks of GRC, just don't expect massive returns from it.