As much as some of the Voyager folks complain(ed) about their jobs, it didn't seem to bother them to collect the paychecks.
You know what, "On se lasse de plaindre ceux qui se plaignent toujours.", Pierre-Claude BOISTE (1843)
(translation: " We grow tired of pitying those who always complain" Pierre-Claude BOISTE (1843)
While I can understand Beltran's complaint about the weakness of certain scenarios, why
going to overflow with the medias, giving so the impression of bitting the hand of those who fed him? It was a stupid move from his part! He should have made like Mulgrew and Picardo, who, while continuing to do well their job, knew how - to little by little - impose their views?!
In the same, even if the character of Chakotay was weakened, Beltran - like Wang - was in pretty well out, with some relatively important episodes in each season from S5 to s7.
As for his critic about the Prime Directive, that was never about " leaving any species to die in its own filth when you have the ability to help them, just because you wanna let them get through their normal evolutionary processes" but rather, "prohibiting Starfleet personnel from interfering with the internal development of alien civilizations, which are below a certain threshold of technological, scientific and cultural development; preventing starship crews from using their superior technology to impose their own values or ideals on them". The Time Travel, often used in Voyager series, was covered as a Temporal Prime Directive, which prohibits those under its orders from interfering in historical events.
Sorry Mister Beltran, but Humanity is not going around the galaxy or the world playing God. There are always plenty of unforeseen consequences to our actions, including making an unstable situation even more volatile!
There is something else which surprises me: how an actor who played during 7 long seasons can so significantly misunderstand the concepts that drove many of the stories? I mean, hadn't his character already been a Starfleet officer before becoming Maquis, so understanding the Prime Directive (introduced in the first season of the OST series) would be natural for Chakotay., right?!