Lord above ... people just like being afraid I guess ...
First and foremost ... Yellowstone
isn't the type of volcano that explodes ... it's a hotspot volcano, just like Hawai'i, and Hawai'i has been erupting now for decades ... just a couple years ago we had the Leilani Estates fissures open up and spew lava ... look it up, no explosions ... yes, this is what we can expect from Yellowstone, fissures and lava but no big explosions ... Mt St Helens, Mt Mazama, Krakatoa, Mt Pinatubo, Mt Fuji are all volcanic arc features that arise from a subduction zone ... the main difference is the source of magma, for hotspots the source is the mantle (runny and flowing), volcanic arcs the source is mid-lithosphere (lumpy and thick) ...
Second ... this heaving of the caldera floor is common ... happens in the Cascades on a fairly regular basis and is being studied in detail ... "This is the first time the scientific community has been able to track an entire episode of magma intrusion" is just plain horseshit ... we'd see 8,000 feet of added elevation through dome building before the magma chamber is filled up, if it were to build up through dome building, and that does seem unlike at this time ...
The most likely eruptive scenario will be a single fissure opening up and spewing runny lava, perhaps flowing to the NP border ... then in a 10,000 years this activity will be ramping up and we'll see these flood basalts reaching the Missouri River ... 100,000 years to reach the Mississippi ... and a million years to reach New Orleans ... it would be a mess but folks will have plenty of time to move out of the way ...
Short version -
"Columbia River Basalt Group - Related to Cascade Volcanoes?" - Central Washington University, Geology Department - 2013 {YouTube 2'58"}
Long version -
"Flood Basalts of the Pacific Northwest" - Central Washington University, Geology Department - 2017 {YouTube 62'34"}