It is very easy to allow ourselves to be hurt by others and it is a nasty overwhelming feeling.

I am sorry you feel this way.
I have had a myriad of reactions to the way we raise our boy. We live a rather different lifestyle and have some rather I guess out there views on the abilities of children and how that means they should be raised at each stage of their cognitive development. Much based on Doman but also other more natural instincts borne from this understanding.
People think we're crazy, people wish they could do what we do, people think we're pushy, people think we're not pushy enough, people think we expect too much of him others believe we have no expectations at all.
I guess that early education covers so much of our life that it is difficult for them to focus on the reading or whatnot when they're slightly more concerned by the tree climbing (he'll fall) or how dirty he is (he'll get germs) or that he's on the trampoline with all his balls (he'll break something) ........ and so on and so on and so on.
I used to get insulted, as if any sane parent would allow their child to come into harms way.
Now I realise they are so caught up in socially bred fears that they their perception of the events in front of them are warped.
Don't be insulted, be kind. They are unenlightened. People who don't understand that which is different from them are often scared. Scared people love to regain power by being hurtful.
A trick that I find helpful is to strip everything back from out there to in me. Throw away all your thoughts about early education from any source other than yourself (that includes Doman). Then have a good think about how you and only you feel about those sessions now extend that to remember your child in these moments - reflect on how they feel about these sessions. You will have no doubt.
Always remember why you do it and keep your mind clear of the distractions caused by others who may or may not know more or less than you about education but never about your child.