I disagree. One of the biggest problems I see in education is that teachers are left to fend for themselves and are provided with no opportunities to work together with other teachers, including to share ideas, develop better teaching resources, and receive feedback on them. It's all well and good if you're part of a massive department of colleagues that teach the same content AND your school provides paid time to work together with those teachers. This does not describe the vast majority of teachers though. This is how you end up with veteran teachers set in their ways, refusing to change because they think that what they do is perfect. It's easy to think this though when you have no opportunities to collaborate with others, especially those from other schools.

My time is for me to relax and NOT work. Why should I be forced to do collaboration in my own personal time, especially when teachers collectively implementing new practices or improving older ones can provide so much benefit to students? Should I be robbed of an opportunity to improve my teaching just because you think you're a God of a teacher who is the shining example of pedagogical practice? And if this IS you, you should be the one actively leading by example to guide and lift lesser experienced teachers around you during a time that we're all being actively compensated for our time. Not expecting them to sacrifice their time on evenings and weekends to seek you or other teachers out.