Google changed all of its browser icons recently as part of a rebranding for G Suite, which is now called Google Workspace, including Gmail, Meet, Calendar, and more. The new icons are awful ...
Browsers are like Macs versus PCs, dogs versus cats, and ketchup versus mustard - everybody has a preference. For the majority of the population, the most popular choice right now is Google Chrome.
Google appears to be working on adding "HD" and "HD+" icons to the Messages app, allowing you to choose photo resolution.