I'm ignoring them because it's more important to consider what is really the problem, what would really solve it, and how it affects three different factions who utilize FRP differently from eachother. Talk about blobbing all you want, but the blobbing situation for OKW is different than that of USF, and blobbing is much harder to achieve with UKF. No one even talks about them specifically.
True but that doesn't address the rest of your post, and my points in OP and in the post you quoted still stand.
For OKW I don't think the FRP cost was ever increased, only some tweaks on Volksgrenadiers like increased cost and reduced Volks effectiveness. This overall discourages blobbing, but didn't really touch on the FRP element. If FRP cost was increased, took longer or even required another truck then you at least force the FRP option into mid-game, much closer to that of USFs major. A huge portion of the FRP investment as OKW therefore requires a lot of forward thinking, because you need to place the T2 truck where you want it but forward retreat comes much later. Maybe even require fuel so there is more tradeoff between FRP and teching up to tanks.
For USF major could have it as upgrade as well, just like the other factions' FRP unlock. Being a squad that can retreat or be transported and have call-in abilities makes USF's FRP the most versatile and offense-oriented FRP option, hardly comparable to the others'.
I don't think FRP is an issue with UKF, they require upgrade like OKW, require building like OKW, and with much of the resources on emplacements mean UKF blobs are rarer and less effective. If not then same change to cost for FRP can be applied.