You are right, my tone was harsh. I edited my comment.
You have to keep in mind that when I wrote that comment, I just had spent 5$ on this tasks organizer that advertised itself as having Linux support and that ended up not working, while, for example, Getting Things GNOME not only works flawlessly on Linux, but is it also free of price and free as in freedom. I felt a little scammed, and I did not want someone else to buy it and be in my situation until the devs fixes it. (Last time the devs updated this is back in 2021 btw)
But you are right, it should not have influenced my tone, and I'm sorry to the devs and anyone else I offended.