This is the element of free to play games, it draws players of all different attitudes and mindsets. You can have your casual player who devotes a certain amount of hours in a week to play VS someone who can play any time, for how long they wish. A certain one of the two will "usually" judge the other.
To be fair with the internet a lot of people will have their own opinions and views. Some people do respect others opinions and views, others don't. People tend to think in a relatively narrow and single-minded fashion, feel like there can only be one ‘correct’ opinion which is undoubtedly theirs because they must be right.
If it's a friendly player on the other hand, and if the views expressed are reasonable, sensible and supported by evidence and wisdom they might be worth listening to and striking up a conversation with.
Otherwise you have to develop an immunity to anything toxic.