The twitter user is making so many assumptions. It's a great look into the delusional mind of alt right people.
For example, they assume all of the gun owners are conservatives and that they are all willing to fight and die for texas, and have the means or money to get there. In actuality, plenty of gun owners aren't extremists or even right wing, and many of those who are probably won't even show up if this shit happens.
Also, if this shit happens, once those who did show up end up in prison, on the run, or dead, you can bet your ass that the same account will be calling it a false flag operation or something [not sure if it was this account or one of the other major right wing twitter accounts that encouraged January 6th and then went on to claim it was a false flag afterwards]
To sum up the right wing lunatic mind: everybody who owns guns agrees with me and would die for those opinions, but also, if we lose, it was a false flag anyway, and most people actually agree with us but are too scared to show it, etc.
It's just a bunch of hypocrisy and assumptions that go against all facts.