It’s worth noting that he didn’t create the meme—his post was actually a screenshot of someone else’s post.
Still not a good reflection of how he sees himself in relation to blue cities.
EDIT: Also, on the very day Trump posted it, Abbott said there were no plans to send the Texas NG to Chicago. While it obviously doesn’t discount other NGs being deployed, I get the feeling Trump is relying on Texas to supply troops wherever he desires them. (Now, New Orleans we should be concerned for, as Louisiana’s red governor would be happy to do Trump’s will.)