[pjmlp]

Case in point, by the time I got at CERN in 2003, most researchers were writing their papers in Word or FrameMaker, with LaTeX lookalike templates.

In two years I hardly met anyone still doing pure LaTeX publications, unless the publishing body only accepted LaTeX as submission format.

[elashri]

Currently you will find that LaTeX is the de facto standard at CERN. Maybe only management would not use it. But CERN gives overleaf professional licence to each member. And all templates I have seen for everything I interacted with that is going into publications are LaTeX.

[pjmlp]

Well, naturally 20 something years make a difference, although for some others, it looks pretty much the same, as I have visited a few times since then as Alumni.