If too much time being taught by women is so bad for boys why aren't more men stepping in to become teachers?
Low pay
Low respect (from society / parents / peers)
Low status
Some of the greatest gains that feminism has made has been in the teaching profession - but that has been at a cost to men choosing it as profession.
My DH is a teacher, secondary level, and bloody good at it. He has several male colleagues - and they are as varied as any group of people. There's no one 'type'. They got into teaching because they love their subjects, because they genuinely enjoy working with young people and because teaching is a great career if you want to travel / work abroad. But our school (not in the UK) does not generally have the above challenges; they are paid well, the parents / students are, by and large, very respectful and there's a minimum of behaviour issues. I'm not sure where status comes into it for them - I don't think any of them are particularly status-driven, but I think they are all quite proud of being teachers (even if it's in a 'someone's got to do it, it might as well be me' kind of way). None of them are 'macho'. There is definitely a bit of huddling together in a very female-heavy sector.
So in the UK what could be done? Well a complete overhaul of the education sector might help. Higher salaries = higher status, maybe. Huge increase in sports / extra-curriculars and extra pay for teachers who can offer these. Smaller classes, which lets teachers really teach in interesting and challenging ways (DH has a maximum class size of 18 - this means that even the most grumpy 15yr old boy gets some personal attention).
Richard Reeves proposed that boys should start school a year later than girls - gives them a chance to catch up on their organisational development, rather than stumbling along in the wake of the girls, who develop these skills much earlier.
None of this is going to happen in the UK, and tbh it can only succeed if it's demonstrated at home. When Celia Lashlie realised that she was going to be a single parent to a boy, she went out of her way to find other good male role models, decent hard-working, responsible men - to spend time with her son. Sports coaches, grandads / uncles, family friends, fathers of her sons friends, teachers, etc.