email i received

For context, there were a few faults on my part,

First, I honest to god somehow did not catch an initial email asking for a reel he sent to me 10 days after I had reached out, that yes I thought I had attached it along with my resume but mistakenly did not. After a few weeks of no response from me he had sent me the email above

Second, this was connection made by my sister who had told him I had 100% availability totally free schedule and I thought I should be clear and upfront In my initial email that I do have unavailability in the coming future that we would have to work around. I’m sure this was possibly not the best idea but I wanted to be as transparent as possible.

So basically wanted to see what y’all’s thoughts are? I found this to be highly unprofessional and an incite to how I would have been treated had I ended up working for him. My sister seems to think I need to toughen up and that he was simply trying to mentor me