Shaloo thanks for the reply. I think you got me wrong. I am not arguing against the virtues of SVG at all. I am all in for SVGs.
However, what I want to point out is that it is not possible for every organisation to have an approved branding which includes SVG assets. Ours for example, the branding team has not provided the SVG logo assets (only PNGs/JPGs). Nor do they authorize creation of custom ones by end-users. So, I cannot create an SVG one out of the existing logo. Does that mean we miss out on mobile SP branding altogether just for this reason alone?
Moreover, the site logos show up just fine at multiple places in the mobile app. They are all PNGs in different sizes at different places and they work fine. I don't care if they end up slightly low-res for users cannot discern that and that is low value. But, the organisation logo is shown in just one place in the mobile app and that is on the top. It also shows in just one place on the web and that is on the top suite-header. I don't feel that these would be such a drastic difference of scaling that would warrant a mandatory use of SVG?
At least allow PNG logo with a warning that it would be better with an SVG. But, mandating the use is a bit overarching, I think.