Word choice is vital when it comes to debating, and I’m a creative writer on top of a graphic designer; ergo, it’s my job to choose words carefully and point out when they are not. Instead of trying to make things personal, try to choose your words more carefully. Presentation is everything, and haughtiness is not a desirable quality in a debate.
Back to the topic at hand–and to answer a question I originally neglected to answer–it is very likely that Torterra will learn Frenzy Plant on its own Community Day, presumably in September 2019 should trends continue as they are. Frenzy Plant does operate better than Solar Beam marginally so, and while Torterra is not the best Grass-type out there, it may still have its usefulness against certain Rock-type Raid Bosses that can either return or be incoming, like Regirock and Terrakion. Sure, there are other options, but Torterra’s double resistance to Regirock’s Zap Cannon and resistance to Stone Edge can’t be overlooked.
In short, I would definitely wait the few more months to get Frenzy Plant. You can always give it Rare Candy or walk it as a buddy so you can level it up before evolving it. There’s no difference in the order you do it in. Moreover, Niantic will announce the exclusive move a few days before its applicable Community Day, so if you’re still not sure, just wait until then.