The use of impact factors in the evaluation of researchers has contributed to the distortion of scientific publishing practices and research practices, noted France's CNRS as it walked away from Web of Science, using $$$ saved to promote #OpenScience & #OpenData.

https://www.cnrs.fr/en/update/cnrs-breaking-free-web-science

The CNRS is breaking free from the Web of Science

From January 1st 2026, the CNRS will cut access to one of the largest commercial bibliometric databases, Clarivate Analytics'

CNRS
@sparc The impact factors are the sympton of a culture favouring quantity and aiming for prestige rather than openness, collaboration and reproducibility. Culture change goes slow and that is fine, but what is lacking is academic leadership speaking out in very explicit ways, feeling responsible for following up on their signing of #DORA, and vocally supporting researchers and librarians that do want to change.
@sparc Impact factors always have been dubious. However, when you are backtracing in the literature Web of Science is great. So I am not sure though how impact factors became a thing tho.