Imho, testing is a necessary thing, particularly early on after diagnosis as you go through a learning curve with your body.
Whether that testing is by the cheaper but more cumbersome and time critical finger prick meter, or the more costly, but discreet and more informative cgm type systems is entirely a personal choice based on your personal circumstances.
I mix both. I used a meter extensively at first while I learned (and was in the fist lock down), now I just use it once a day. I use a libre when on holiday, or in other situations where I am unlikely to be in total control of what I eat (eg family visits, hospitalizations etc) or if I want to test or retest certain foods.
Overall is an individual decision, that may change over time. Its not set in stone, one or the other.
My motto with diabetes is "never say never", ie be open to change