It is not a "pro-science" talking point it is actually a real pro-science without the quotation marks talking point.
Science has been completely under attack for every second this administration has been in power, in every single way, from funding to scientific indpendence to censoring of words that are politically incorrect to the Trump administration.
Suggesting that this is an optional high profile shut down of science rather than something completely in line with what's happening every single day is a very odd take on the matter.
And as to the proof that this is not something that people really care about in a high profile way, the science rallies get about 1/10th the support of other sorts of rallies in those trying to resist Trump's changes.