I don't get the lack of spiders in REmake 2 complaint, as spiders & crows were more of an RE1 enemy that just makes a cameo in 2. If they were to appear in REmake 2, the team would have to dedicate time & resources to makes models (RE2, they could reuse assets from 1, not the cause for the REmake) for an enemy that only appears once. The alternative is to add more encounters with them, but they clearly did not feel they fit the RE2 scenario.
The director of REmake 2 was the animator of the spiders of the original, and even he didn't care about the spiders.