The company is very aggressive and heavy handed with its culture which is very political and very far left radical. To provide a more welcoming and constructive environment for all of its employees, politics should (and traditionally were) kept out of the office, but not so at HubSpot.
Regarding team dynamics, teams are set up to look good on paper, but managers are focused on completing rituals and voicing slogans while being indifferent to the progress and success of employees or else being too afraid of confrontation to actually make expectations clear. Supervisors have no interest in training new staff on company resources and company paradigms and merely wish to insert staff as cogs in the machine rather than preparing them for excellence and a greater contribution.
There also appear to be higher management schemes to fish for justification to push employees out of the company as a backdoor approach to layoffs, rather than being straightforward.