Generic "you" can be dropped.
1st person is direct and clear
2nd person can be most unclear and highest risk of being perceived as attacking
3rd person, in this context, is a safe bet
"That's incompetence" vs "It's your incompetence"
Thank you for coming to my Fred Talk.
Or was it... Thank 'they' for coming to my Fred Talk?
God damn it.
fkking internet and fkking swear filters on this forum someone should look into this!