Just to correct you, the government have been warning for years that obesity is causing a crisis in the nhs, as have the nhs itself. Are you arguing with the people running the nhs?
Its a pity the government haven’t done more of a ‘Covid Style’ campaign and shown the general public the true effects of obesity. We know for example, that one of the causes of Cancer is obesity, therefore more people who are obese = more people getting cancer, aswell as all the many other health conditions obesity causes - diabetes to name a horrible one.
You may not personally be using the nhs much, but there is a higher chance alot of obese people are compared to someone who eats healthy/regularly exercises to maintain a healthy body weight (not in any way suggesting people should strive for perfection, but we know what a healthy body weight is - we can google it).
There is going to come a point where the nhs cant cope (nearly there) and maybe then people will sit up and take note. I actually thought Covid would be a turning point as we know (for a fact) obese people were far more likely to be affected more seriously by it and still are. The facts are all out there, even if you have been lucky so far.
So yes, more people obese = more strain on the nhs which is already battling horrendous waiting lists, Cancer backlogs, Covid, flu etc.