I met many new players/sprouts that are disrespectfull, non communicativ, arrogant and destructiv. So what ? My personal expierence defines a whole group of people ?
The mount is not a reward for the mentor its for playing many dutys. All rewards need a lot of dutys.
Next thing is helping is voluntary. Its not a duty for mentor to help - the mentor can help if he wishes. No player can demand help. The viewpoint that a mentor have to help is absolut nonesense.
The argument with "mentor was mean" is a straw man argumemt and absolut unrelated to the mentor system. Toxic player are always toxic with or without such a title. Report such behavior - done.