I have seen tipsters that are consistently profitable.
Most experts who claim that they know the game inside out and have certainty in the result of each game is lying to you. Most profitable tipsters that I've come across do not proclaim this, but rather place bets on +EV propositions that over time accumulate to a profit of many betting units.
That said, don't go out there and blindly pay for a tipping service. Make sure that they have a verifiable edge and track record first.
Yes, let's avoid those people who are taking money for such a service. It's a prediction which ain't 100 percent accurate so why do we have to pay for that?
Also, this might help to reduce the number of scammers who do this service out there, especially in Telegram. They keep on coming or creating new names because they know there are still people who fall victim to their scam attempts.
If no one is patronizing these shitty services then I bet they will be reduced to a number that we won't see them frequently anymore. Up until now, my Telegram account has been filled with those scammers. I simply joined a sports group with gamblers sharing their picks and then suddenly I received a lot of PMs from different people which I think are just a group of scammers who are trying to scam.
I think even sports insiders can make a wrong pick, I mean, we have seen a lot of sports games where the underdog wins or the unexpected team with lots of injured stars can still win a game using their bench. So, there's no telling where a game will end up, no one can perfectly predict what the outcome will be.