1. Anti identity politics
2. Refuses to call out white racist voters
3. His WWC 1st politics doesn't flip red seats
4. His constant ****ing on Dems helped Trump win
5. His plans are as realistic as Trump's wall
6. His fans are toxic
8. His hypocrisy around on his wealth
9. His failure to enact any of his pet legislation in a 40 year political career
10. Failure to build any kind of political coalition with actual accomplishments
12. His naivety in thinking Republicans will vote for him and his candidates (proven wrong from 16-18)
13. No serious foreign policy agenda
16. The false claims that America used to be better decades ago (better for who, exactly?)
Age questions
Questions remaining about his wife's FBI investigation
Questions re the VA
Writings from his 30s
Pretending there is no legitimate reason to oppose Sanders or that opposition is all "paid" is utterly delusional.