A lot less people blog regularly, and there’s a zillion alternatives to blogging, including pervasive social media. If you just want “a web presence” then the zero friction way is to create a Twitter or Facebook / Instagram page. It pains me to say this but the era of the blog is probably over.
That said, there’s still a lot to be personally gained by putting your research journal on the web (as a blog or anything else you prefer), like I did back in 2004, and seeing what happens. You can link to it, you have a record of what you were working on, and interested people can find it over time. It still works!