That's where we're going to disagree; as I said earlier "significant" is highly-debatable and subjective. I would deem sending merit to 200 alt accounts as significant enough to call it abuse, personally. I would also deem sending 50 merits to 4 alt accounts as significant enough to warrant abuse. 5,000,000 Merits would put you at the top of the most merited list for many years to come, which is also significant. Each scenario you describe, I would disagree that they are insignificant. I also see the rank of the accounts to be mostly insignificant when determining how abusive the situation is; although, maybe I am wrong for this criteria.
Ok, 5 million might be a borderline abuse case

but 1 merit each to 200 accounts seems exactly the same as what OP did. What makes it more significant? Is having 200 alts instead of 1 alt the problem? What if I'm a benevolent farmer and don't spam with those alts?
Here is how I see it - and I'm not trying to convince anybody here, just stating my opinion. The OP has no purpose for the alt account(s) other than to spam the forum. The post quality is somewhere between useless and horrible, as evidenced by the inability of those two accounts to earn even a single merit from any other user. The OP was trying to keep the alts secret but got accidentally exposed. I can also see intent
to not give up "only merit point" as well as a
registration in a sig campaign that pays more to Jr. Members with at least 1 merit. Occam tells me that the OP sent the single merit to their own alt in order to make more money via shitposting and I consider that quite significant.
Now if you excuse me I'm gonna go register 200 accounts. Please don't rat me out to The Pharmacist.