All this just goes to show the limitations of MLB's investigation.
We mostly only know what we know due to Fiers..but he hasn't been in Houston for two seasons.
Whether this particular allegation is true or not, does anybody think the Astros players stopped trying to look for advantages or ways to cheat when Cora and Beltran left?
I doubt we ever learn most of the cheating that goes on in baseball...because it requires people who are/were on the inside to talk, and there's few willing to do it, and almost nobody is willing to put their names to it like Fiers did.
I think MLB has to crack down on the technology in the game....get the iPads out of the dugouts and tighten up the replay review systems.