My thought is that current outdoor relaxation stations will be gone extremely soon. Really no point in them at this point, as they are nothing more than an area to sit down and take your mask off, which you can now do anywhere outdoors if you want to. For people that wish to continue wearing masks, basically all of WDW just became an outdoor relaxation station.
The indoor ones will probably stick around until Disney feels the need/desire to reopen the area for its original purpose, which may not be much longer. For example, if Disney is going to keep Askershus or Pizzafari closed for a few more months, might as well leave them open for a relaxation station for a while longer. However, with the increase in park capacity, I suspect there is going to be pressure to get those restaurants opened back up sooner than later.