Don't forget, it's not just GA that have to deal with Part 141.
I think you missed my point. All the operators you mention are doing training/checking not covered under Part 61, therefore the need for a Part 141 certificate.
CAA are introducing a system where training organisations will need a Part 141 certificate to do Part 61 training. This was never the original intention of Part 141. Once certificated under Part 141, they will still be training to the Part 61 syllabus but with the added cost and paper work of Part 141, but with no extra benefits from the current situation.
Hence my comment about Part 141 being hijacked.