Sorry: I checked your cv and I can assure that your skills as a developer are at least 10x what I had even at the top of my career.
I type mostly from my phone so I am often hasty (and make lots of typos).
I assure you that when maybe looked like "lack of expertise" I meant "less experience dealing with the messy underbelly of large, mature companies".
while i appreciate the groundless flattery, no apologies are necessary; whatever effects the tone may have on my ego are less important than your generosity in sharing your experience
Apologies for the tone anyway.