Do these tags really weigh down the webpages? I don’t see any noticeable differences in loading times on websites with these tags vs websites with lesser or no tags.
They don't. Removing these tags will not result in any meaningful increase in page load time honestly. This is especially because most don't actually load up any linked file. Their weight is just the characters they are typed out in.
It's an informative webpage but it's not very effective optimization imo.
