Why some account with alt account had neutral feedback and some with the alt account was punished with red tag .?
I'm not sure you don't know the rules regarding having multiple accounts on the forum considering your current rank.
some senior forum members have alts, such ownership is not prohibited by the forum. even some intentionally tag their own alt accounts.
next, accounts that are tagged neutral are usually related to connected accounts exposed with evidence but do not abuse their alts to join the same campaign. I'm sure all campaign managers do not allow alts in the same campaign. whether it is written in the campaign rules or not.
while accounts that are exposed with evidence of violations related to the abuse of many accounts in one campaign will be tagged as cheaters.
Now you understand your situation? so no need to compare your situation with others.