Well it sounds like it was a rousing success, all of 17 people there.
Seriously Lloyd, get off your high horse. It's not like you testified before all of parliament or anyone sought you out for your high and mighty input.
You said yourself that you wonder if the IICSA even read your information, so now you're thinking this little informal group of a handful of parliament members, which by their own admission "have no official status within Parliament" (https://www.parallelparliament.co.uk/APPGs) are going to do anything?
But do go on and pat yourself on the back for walking into a meeting anyone can attend, offering your little tidbits, and acting like you've done something other than created a pathetic photo op.