Hello comrades, Hope everyone is doing well. I'd like your feedback on something that just came up!
Firstly, as this community applies as a whole, I try not to be sectarian towards different leftist tendencies, even though I identify as a marxist-leninist, broadly speaking. I try not to critique by using old clichés and I also make a big effort to stay constructive in the spirit of left-unity (a principle that has its limits, I recognise it)
I respect my trostyists, anarchist, syndicalist, trade-unionist, maoist comrades, as long as you're democratic socialist or left, we can have constructive conversations and I will treat you as a comrade.
I am about to start a masters degree in political science under a marxist professor (the only one in a department of 18+ professors 
) and I was talking to him about Losurdo's works, some of which have been recently translated. He then told me, with a straight face: "I don't really like Losurdo because he wrote a book about Stalin". Kind of took me off guard coming from an openly marxist professor, but I think the trot tendency in the west is overwhelming. So contesting the epistemological framework of capitalist societies that even we, as marxists, have to deal with, is met with the same zealotry that any other capitalist institutions. I'm kind of saddened to see the person who will supervise me take this attitude towards a form of (non-bourgeois) knowledge and straight-up dismiss it without consideration (he admitted not having read Losurdo, except for his counter-history of Liberalism, which I respect nonetheless.)
I've not yet exactly decided my topic of research, but I'm afraid that this might cause some frictions in our professional relation? Of course, it is totally possible to work with other types of leftist tendencies, but seeing the close-mindedness and immediate negation of the opinion of an italian marxist on the topic of Stalin who, I admit, is a polarizing figure, makes me kind of uncertain about this. Worst thing is, I know my professor's mentor, and he is much redder and favorable to AES (which my current teacher disregards in bulk) Makes me think of the concept of "Imperial Marxism" that gives you a material understanding of capital, but still condemns as immoral and authoritarian any attemps to get out of it. When you're met with arguments against the USSR, China, Cuba, Vietnam or Korea, the rhetoric you're met with is indiscernable from pentagon schills.
TLDR: Master's degree teacher has sectarian trot tendencies. Advices on how to proceed to avoid friction?