Frustrated employees say "#notmyjob"
I spent some time in Innovation at a bank and learned to have a lot of sympathy for the "not my job" types. Part of my job was going around and figuring out areas of improvement.
Lazy employees don't care about work, so they tend not to deal with it beyond what is required. They are looking at cat videos on Reddit when not working, not complaining about their positions. They don't get involved in the complaining. Disengaged employees are on LinkedIn instead.
You have frustrated employees. You have employees who have found something stupid and can't be bothered to fix it for the umpteenth time. You have employees who are frustrated with a tool that won't work or doesn't do what the actual job is.
Employees who never cared don't bother to point out that a problem exists as they truly do not care. Speaking about it is wasted effort to them. Employees who repeatedly complain about a problem want to care, but are exhausted by doing so.
Go figure out what is wrong before condemning them. You have better employees than you think.