Was referring to fixed-wing CAS.
Army has some fixed-wing intel platforms and other such aircraft, but they are small with small footprint and comparatively small logistics and support needs, and short runway requirements.
Your links refer to internal Army reorganizational efforts with Army assets, not Air Force CAS assets nor assumption of fixed-wing CAS (i.e., A-10).
It gets blurry, because Reaper is being thought of as A-10 “lite”, and may have armament more like an A-10 in its next incarnation. Still piloted by the AF, however.
I truly don’t think the Army would have any problem in making the infrastructure for A-10 operations. In the modern military scale of things, an airfield and its supporting logistics are not that great. Even the Marines would be more than happy to take that burden.