It's considered spam because it's little more than a link to a product advertisement where people can order the product (and others from the same company), it's loaded with popup ads, and then you ask if it's "ideal nutrition," which is advertising lingo that no medical professional is likely to ever use. You couldn't have constructed a question that looks more like spam and has the same effect as spam if you were trying to do so. I'm sure the Huel company would be very pleased to learn that someone posted a link to their advertising on a site like this.
But even if you didn't intend to spam the site, you need to visit the help center and read What topics can I ask about here? There you will discover the following:
Often asked questions that are off-topic include:
- medical advice for yourself or others
- questions about nutrition and diet that aren't directly connected to medical treatment
- any other personal advice
- interpretation of test results
- treatment recommendations
- second opinions.
So, spam or not, it's still off topic.
And finally, "ideal nutrition" is a matter of opinion, which also makes it off topic.