The Chem building A doesn't bother me at all, it looks very sciencey/lab-like, doesn't seem outdated to me at all. I find it odd they are replacing A & B, with A being the newest building? From Wiki:
https://wiki.ubc.ca/Chemistry_Building
Construction of the Chemistry Building (then known as the Science Building) began with the centre wing (D Block) in 1914[1][4][5]. However, it was left unfinished due to the outbreak of the First World War[1][4]. After the war, the building became a focal point of the Great Trek when more than a thousand students flocked to the unfinished structure to call for the establishment of the UBC Point-Grey campus[4][5]. The building was eventually completed in 1925, and was renamed as the Chemistry Building in 1949[4]. Additional blocks were added in the following decades, starting with the B Block in 1959, the E Block in 1962, and the C Block in 1963[4]. The A Block, which is known separately as the Chemistry Physics Building, was added in 1989[3][4].
It should be B & C torn down, not A. Or how about they replace Buchanan already, that complex is wayyyy worse, it's a joke it is still there.