I think I do get it. This is one of those rare cases where:
* This interpreation is understandable: 'this is a ridiculous cash grab, this single act says so much about the attitude of this company that the right answer for consumers is to run for the hills, and for those who work there to start looking for the exit'.
* ... but perhaps not: I can totally see it; the cost of the process is much higher than the hardware here. Adding a tiny extra cost with the aim of allowing synology to offer more integration is presumably worth it. Also, scams with harddisks are rife (written-off heavily used old disks being resold as brand new) and synology is trying to protect their customers. I think it's a bit misguided, but there is an explanation available that has little to with 'cash grab / enshittification' principles.
Giving them the benefit of the doubt: Even if you know you're right, if you're dependent on others understanding that you're right, then you either [A] do a fantastic job on explaining the necessity of your actions and keep plugging away at it until you're sure you got that right or [B] you. can't. do. it.
So they still messed up, and the damage is now done.
If indeed this is the explanation (they messed up on communication but they had honest intentions so to speak) I'd hope they can now fix it, take their lumps, and survive.
But if not, yes, the well respected staff will leave and they'll end up being another crappy company that primarily serves as a reference for the dictionary definition of "enterprise software". Expensive and shit.