As for Wang particularly, if you look at IMDB its pretty clear his career has tanked since Voyager went off the air (his biggest role has been in a Trek fan film, for Pete's sake) so it's quite possible he's just a really bitter guy.
granted, First I apologize for not reading the entire thread or interview, however please consider:
99% of actors in SAG and AFTRA (unions) are not working steadily or earning a decent wage. he may be bitter but he does appear in the fan web trek series..... most, again, MOST, trek and or sci fi actors do not work steadily nor become 'stars'. aside from typecasting, its the field in general. if not for conventions .(theme from gilligans island comes to mind) theyd be lost. look at the tos cast. Took Shat years to get just a few decent gigs.
IMPO i found Kes becoming annoying , boring, and redundant at that point, was nice to see her come back sociopathic later in the series, but she ran her course. 7 o'9 was a gr8 add,
There is a industry saying, "But what I REALLY want to do is direct" the union web stores, and Directors guild, sells t shirts caps etc, so what may or may not have been promised doscussed idk. but its common for many actors to do that especially after a few years of being told what to do where and how to do same......
just my 2 quatloos. from the newcomer...... film at 11