Your points are valid and I posted about this issue few weeks ago. However steemit will not be doomed because changes will be made HFork 20 ( I wrote about it). Bots upvotes have always been an issue and there is n way we can stop it because it adds to innovation here. The bad one was discussed in my last mont posts including https://steemit.com/bots/@charles1/bots-steemit-killer-or-a-strategic-use-of-time
Upped...good post indeed