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I’d say that the ethics that we demand from accounts to not merit their alts is better played out if it applies objectively, and not subjectively, where some reasons warrant self-meriting and others not depending on the subjacent exposed reasons. Open the can of worms, and the worms will wiggle their way out …
Besides, any decent poster can earn some merits from a new account without much effort.
I wholeheartedly agree with this post.
Approach this type of conundrum objectively- not subjectively. In fact, the end does justify the means! If the forum rules explicitly prohibits meriting your own alt-accounts, even with the most honorific or reasonable excuse, it should not be allowed in any case. Besides OP, with your caliber of a poster, receiving 1 merit would not be too difficult on your experience and skill.
Like most mentioned, just ask someone respectfully if they could merit a post of yours or message the moderators about your issue.