>Fourth, students seemed reluctant to come to the office seeking help. [...] I suspect there is an increased factor of intimidation associated with being lost in the material and asking a much older male professor for help.
Let's ignore the weird second half assumption about 'older males' for now... Young people do not have a concept of 'come to the office seeking help'. In my years of professional experience I have not once gone to someone's office to seek help. Instead, people email each other, text, chat, video call... help can be synchronous or asynchronous. I wonder how many times a student has taken time out of their day to trek across campus to the professor's office only to find the professor away, or head-down busy grading papers, or just about to leave? Young people can be extremely sensitive to how they impose themselves on other people. Professors need to get with the times and make themselves available through channels that their students are more comfortable with, and I think this should include allowing students to get help with the material anonymously. (I don't intend to direct this at this specific professor, but the bemoaning of students not seeking help I find is often linked to professors thinking it's still 1972)