Because they are generally derivative slop that simply rip off their inspiration rather than making something truly new from it. See UFO 50 for examples.
>>715474917 (OP)
they lack the passion, limitations and struggle of the past.
sometimes they have the passion and they end up making something good. but without the other two it will never be the same
>>715474917 (OP)
RayForce stands out though, it's a shooter that doesn't run on toaster tier hardware which was commonplace for the genre. Hence the superscaler effects and high production value feel to the game.