To object to a religious song at a baby class?

[SecondTimer2019]

I take my baby (6mo) to a baby sensory class and this week the theme was 'rainbows'. At the end one of the songs played was 'Who put the colours in the rainbow?', which I remember from my childhood.

It asks who created all the amazing things in the world and ends by saying things like 'It can't be chance' and 'God made all of these'.

I'm not religious and think this environment should be secular. Obviously my baby can't understand the lyrics yet but I still feel it is inappropriate.

I'm thinking of contacting the organisers to let them know my feelings.

AIBU?

"With all the stresses on children and teens in the modern world, it is greatly beneficial to their well being to know that they are loved and valued by God, no matter how many mistakes they make, exams they fail, or how despised by their peer group, or however lacking in expensive fashion items or physical attraction they may be. "

lmao what bullshit

I posted a thread very similar last year and got similar responses. I have withdrawn my children from worship and people often tell me I'm being OTT.
Just last week my 6 yr old came home in a panic as he'd sat through a Christian service with the local minister and his teacher 'forgot'. I was totally fine, not a massive deal but need to let my children know that this is a fantasy and not a real thing.
Why do our children routinely get taught that something made up is real and fact? I genuinely don't get it 🤷🏼‍♀️