M7? i.e., "Overhanging; powerful and technical dry tooling; less than 10m of hard climbing," i.e., roughly equivalent to 5.11. Put me down as "skeptical."
There's really nothing "mixed" about this "climb"; I think you're misunderstanding the term.
There was a dyno, "huge" or otherwise, in there somewhere?
In sum, good on you for getting outside and trying something new, but bad on you for continuing to delude yourself, for posting another silly video, and for having near zero humility. I wonder if you will ever learn?
I think a TR along the following lines would have been much more appropriate:
Practiced some mixed climbing today near Lake Wenatchee at the crag knows as the “Demilitarized Zone.” The rock wasn’t stellar, but it was good enough for practicing a bit of mixed technique. I threw in a few bolts on one line which, given the less than stellar rock, made things a bit safer and also enabled me to practice leading. All in all a fun day. Anyone who’s interested in getting in some “mixed” practice might want to check out the line I bolted; PM me for directions.