As long as you are in solo content I don't care how you play. However you have to take responsibility for your choice to actively avoid using skills you do not like for whatever reason, most likely resulting in below intended requirements and/or expectations for group content. This means you either you use those skills in a randon group setting, you use the trust system, or you create a premade and explain to the members you will not be doing x, y, or z.
If you choose to use the random duty finder tool, you also made the choice to give up a portion of your fun in the intetest of a quicker party for group content, which is meant to be done cooperatively. While any 1 other person in the group does not pay your sub you also do not pay the rest of the groups subs. If your choices have impacted the group enough that one person felt the need to speak out in the party, odds are more people in the party felt the same way.