Wait, wat?
How can you compare ETH and Grin, did grin suddenly create a massive premine and miner/dev tax system i don't know about?
Saying the devs dumped is retarded because they have Nothing to dump!
Right, no premine for Grin.
Well as far we know anyway, it's kinda difficult with a privacy coin.
That said, tx inputs and outputs in a Mimble Wimble block, make sure this can't happen -
to the best of our knowledge (no 51% attack either).
But surely, Grin's Dev's are one of Grin's most active miners - since the first second Grin was alive.
And it's not a far stretch thinking of the Dev's applying Nicehash compatibility (or similar edge - custom ASIC) for themselves - before it went public a couple of months later.
In my thinking - this happens to every new coin to a certain extent. It is up to the Dev's how much of that
mine they will dump to cover project costs.
Anyway, this is just my opinion, I'm not accusing anybody, and I'm not crying about my holdings.
I'm just speculating that Grin was dumped too much, and possibly the reason why.
meta post: To be fair, it's easy to point fingers at people, when including myself has dumped & re-bought Grin on several occasions.