It's been needed for some time doog and even as an investor I welcome the change. The risks of 100x were too high and could bring about huge losses if max profit was ever won, which was a tall order anyway given the odds of winning that insane amount. Not only is clam more protected now, perhaps people will choose to do more with their clam now rather than letting it sit with a high offsite on JD.
People may be hurt by this change but it is a needed one, for clam and for everyone who gambles and invests at JD.
I don't think it hurts anyone. Illustration (keep in mind people aren't winning 200k+ per roll as it is):
You have 100 CLAM and I have 200 CLAM. We both invest at 100x. You now have 10,000 and I have 20,000 (giving you 33.3% and me 66.6%).
He changes max Kelly to 10x
You have 100 CLAM and I have 200 CLAM. We both invest at 10x. You now have 1,000 and I have 2,000 (giving you 33.3% and me 66.6%).
This affects nothing on the user's end. Either way, our relative ownership of the pool is the same, therefore we both earn and lose at the same exact rate as we did when we were at 100x.
There is a slight difference due to people investing at 1x Kelly or so, but the majority were doing max.