If going by the published source; Tiffany has not left OMAAT, she is still listed as team OMAAT,
If going by impressions , she is not involved with OMAAT anymore primetime as her efforts are with Point.me

I am not allowed to cross post from the other FT: Thread Point.me Self Serve real time award booking search engine,
but in my quest as a noob experiencing longtime favorite KVS / new Roame / joint blogger project point.me ,

i googled to find out more, as any informed consumer would do:
sources like:
https://thenomadicnetwork.com/event/...king-point-me/
and type in youtube: hacking flights with online tools rewards and points all the hacks Tiffany Funk
https://www.prnewswire.com/news-rele...301730534.html
https://www.linkedin.com/company/poi...w.google.nl%2F
Lists Tiffany as co-founder & president, which indicate her expertise, interest & attention are primarly now with tinkering/formating points.me to work at 100% accuracy, better UX, adding partners/databases
As it shows in evidence her attention is elsewhere present because OMAAT's search function + result display is broken, wheras in the past she handled all OMAAT technical matters.