It would be cool if all of the fancy front-end people would learn how to use HTML properly before lecturing the “old farts.” The <ol> example comes to mind.
The way some people code "HTML" these days is like an apprentice carpenter swaggering up to a house building site, and then banging in nails with the butt of their power-drill, and telling the "old fart" carpenters what losers they are for bothering to use a hammer.
Use the right tool for the job. HTML is a toolbox, not a bucket of <divs> and <spans>.
You can be old and experienced and still have an attitude of being open to new things ... at least to the point where you understand them before you embark on a rant.