Has it only occurred to you, that you're the only person who feels the advice is reasonable? Maybe you need to rethink and take your own advice instead of going around and posting your comments. Seems you are trying to make up for something you're not?
It sounds like this LL doesn't want to renew to the tenant and they were inspecting the property - If there is only a month or two left on the lease. Give them notice of non-renewal and explain you'll be doing some remolding if you want to make an excuse. If the hole was there when they moved in & you're trying to decide whether to renew the lease it must or may have been a year. I wouldn't fix a hole for a month.