YANBU.
Since I had my children, l have had periods of working part time and also being a SAHM. My DH, has always said that the money he earns belongs to the family and l have access to however much I want. He has always said, that if it wasn’t for my support and contribution to the family, he would never have progressed in his career.
What your DH is saying is wrong. He’s being financially abusive. I bet he has never: dropped and collected his son from school, taken time off during school holidays, woken in the night, done the housework etc etc. All of this is your responsibility and he does not view it as a contribution to your family.
IMO, you can’t argue with him (because he will not believe he is wrong) so there is little point. After this pandemic, eventually subsides and the lockdown lifted I would find a full time job. I would get my ducks in a row, leave him and file for divorce. He’d soon realise, that what is his, isn’t just his. You’d get a share in his pension, equity in the house you own (if you do of course) and any savings.
As an aside, what the hell is wrong with some of you on this thread? Criticising the OP, for losing her job. Ffs, we are in the middle of a pandemic and many people are either losing their jobs or taking a reduction in salary. Also, why wouldn’t she keep her salary of £150? She was paying for her phone etc and things for her son.
FGS some of you need a lesson in comprehension.