What I think people were referring to was the gate-to-gate shear(?) measured by the velocity signature on radar (someone can correct me if I'm wrong). At it's peak, the gate-to-gate shear exceeded 200 mph. However, that doesn't always translate to winds at the actual surface, so it is unreliable to go off of a radar signature above ground to determine the actual wind speeds in the tornado. Plus, I have my doubts about damage indicators being available to classify the tornado as EF5 (thankfully). I do believe that the tornado was probably of violent intensity at some point in its life. The only damage pics I've seen up to this point wouldn't warrant any higher than an EF3 rating (toppled transmission tower), again, someone who has better knowledge of the EF-scale can correct me.
To relate all that back to the general theme of this thread, yesterday's tornado(es) definitely remind me of the Canadian, TX, and Laverne, OK tornadoes on May 23, 2019. They were only rated EF2 and EF3, respectively, but probably were capable of producing more significant damage at their peaks. Some images of the Happy, TX tornado almost looked like a carbon copy of the Canadian, TX tornado, in particular.