I feel like this is an archetype. Show up out of nowhere, half-understand the problem, make a brain-dead suggestion, and then as soon as you point out the problems with that approach, they're suddenly too busy with other things to respond.
Engineer (thinking): (No, you idiot, there isn't, because it's broken! I told you, all options have been tried, and this was the least painful way of doing it. Yes, it's not the ideal solution, but there's no other way, unless the upstream vendor decides to fix the issue on their end!)
Engineer: thanks, I'll look into it :)
We ended up supporting the brain-dead solution, but that team has now experienced 100% turn over since then.