Using the existing tags system is definitely the easiest route right now but as @vikaspotluri123 said, dynamic routing is the future and is designed for this sort of use-case where you want to separate tags into more discrete sections of your site. There will also be refinements coming to the admin area later too that would make managing multiple sections like this easier. However, it’s still in active development so there’s not really any documentation and some things may not work quite right.
I wouldn’t necessarily say it’s an easier way, more like the “classic” way for completely separate sections of a site with different authors, designs, etc. If you want to run each section as a different site with all the additional maintenance and overhead that brings then it may be worth doing it that way until dynamic routing lands.