If I understood the premise correctly (you don't have to post in either of the threads to participate in the LTC part of the giveaway / low-effort bounty) then yes, that's completely fine.
That's good to know.
Although I am still hitting my head against the wall to understand mprep's interpretation, the topic could just move to altcoin (bounty) section since it's obvious that intention of OP was not promoting LTC but paying in LTC (low value amount to avoid dust payment) and BTC to perform a task which is to tweet Elon.
How would one determine if the task is not substantial. Those who will get paid in LTC was asked to make a certain tweet which was already given but those who will be paid in BTC was ask to make their own tweet, but it has to go with the original idea of OP.
This is where it gets even worse. Initially OP had plan to pay everyone using BTC. But when I suggested him that he should consider paying the small amount using an ALT (possibly I suggested LTC) to avoid dust output of BTC he agreed. Then I revised the terms and give him the revised terms to update his original post. With years of experience if my understanding of rule is not clear then how would we expect a user like OP (who is very new to this forum) will understand this special rule correctly. In fact, this rule is becoming confusing as we speak. If we focus on only the responses of this topic we will see except mprep and maybe PN7, rest of us are thinking the thread was just fine and actually protesting the action that mprep has taken.
How would you now apply the rule now when it's very clear that OP's intension was modified by me, and he reposted the topic after taking my suggestion. If it really is a bannable offence (let's say all of us are wrong but only mprep's interpretation is right) then does OP deserve ban, or it should be me?