Ripple is a highly centralized project and we can't warn enough to avoid Ripple at any cost. We have so much better and more decentralized coins at hand, why invest in such a shady fraud project like Ripple is. Ripple can be easily manipulated and it is highly relying on Ripple's core developers which are by Brad Garlinghouse involved in marketing fraud and similar shady staretgies to push Ripple.
No matter how hard we warn them when the brains of these Ripple worshipers have been washed, we can't do anything, meaning that the point of view is born from the performance of the brain/personality, therefore it is difficult for us to change when they have faith in something in their lives. They won't hear that greedy developers are manipulating to trap gullible people in their games.
You are right, Ripple fans can be very harsh, when called out for worshipping a dangerous centralized shitcoin. It's like a lot of denial is accumulated for Ripple fans because wo wants to support a centralized dangerous shitcoin like Ripple, which is also pushed by fake marketing strategies to take market capitalization away from BTC and ETH.