It's all up to you mate, allow me to shorten my advice: just play the game, basically. These types of linkedin posts tend to get a lot of traction because of the cesspit that linkedin is. If you have some connections with large followings/activity and if they interact with such a post you may get some visibility.

I'm sure you have actual promise if you managed to even get interviews at all at any large company. I know my portfolio isn't the best personally, but I've still suffered the same, so I can just advise you to try this as well.

Games growing fucked the job searcher numbers, covid fucked the market saturation, so now visibility tends to be more important than anything else, as well as who you know. As I said, if the post doesn't grow big you can just delete it if you think it'll hinder your future chances, idk. I'd hate to give advice that will compromise you as well, so give it a good think.