The drawback of FT8 is the very "rubber stamp" nature of the QSOs, with just the bare essentials exchanged. As specialist software is needed (free), newcomers cannot just chance upon it.
The advantages are it only takes 50Hz of bandwidth and is far more sensitive than SSB or CW. A second advantage is most activity is concentrated in a few kHz, making DX easier to spot. In my case, not having to use my poor voice is another benefit.
Even with 2.5W and an omni antenna, I get reports from over 500km away every day. I suspect this is some sort of scatter. 2m FT8 has been transformative, although I can see why some do not like it.