Generally, people act to conceal their collections, so whales prefer to appear as dolphins, and the dolphins prefer to appear as sardines, if anything, there are more clusters than MNOwatch has identified. So, for sure, plenty of people capable to run 4k nodes, even 10k nodes.
Correct. People are trying to obfuscate their voting behavior, by voting to irrelevant/burned proposals.
Only the sardines are usually honest, but sometimes even them are grouped with a whale to hide themselves!
Thats why we have coded the similarities report (which is somehow abandoned nowdays, because it takes time to finish so it needs a more powerfull machine than the one we have).
I also plan one day to change the code of mnowatch.sh in a way so that when it runs it will deal only with specific hot proposals and it will exclude all the rest irrelevant/burned proposals that are often used for voting behavior obfuscation.
I have too many plans, but unfortunately too little time available....Yet I act like I'm eternal.