Without the AEC, brits have 0 counters against the 222 (only doctrinal tank hunter sections).
Um, an AT gun?
Also if they don't have an AEC then they have a bofors, which shreds the 222 to dust instantly.
As to OP - I entirely agree. In 1v1s emplacements aren't such a big deal, as their cost means there are some significant sacrifices needing to be taken, but 2v2s and above it is atrocious. I just played a 3v3 as Ostheer against 3 brit players utilizing the new commanders (2 emplacement doctrine, 1 land mattress), and while it was pretty back and forth and we ended up losing at the end, the entire game basically had no enjoyment to it.