Do you think Patrick is out of character? Here are some episodes that proves my statement:
Battle of Bikini Bottom- Patrick was trying to spell ''you are not my friend'' to Spongebob
SpongeHenge- Spongebob needed help from Patrick to get away from the jellyfish, but Patrick didn't help, he said Spongebob's a negative influence
Gone- He said that he was tired of Spongebob like the others when they were celebrating National No Spongebob Day
The Splinter- Patrick did an attempt to get rid of Spongebob's splinter, but after a failed attempt, Patrick ended his shift, he barely helped Spongebob
A Life in The Day- Patrick lived dangerously, but his superstition made Spongebob live the same Patrick used to be. Did Patrick help Spongebob from not living dangerously? No!
Sun Bleached- Why the heck was Patrick wearing headphones when Spongebob was getting tanned?!
The only episodes in Season 5/6 episodes where Patrick wasn't out of charatcer are these:
Not Normal: He helped Spongebob become wierd again
House Fancy: He lended back Spongebob's brain.
You see? Patrick doesn't help Spongebob except the two above, Spongebob still provides to help Patrick. What do you think?