"The trades" each come with occupational hazards of their own. These occupational hazards are sometimes much worse than sitting down. Besides, op clearly stated the intent to walk more.

For example, would you accept a 1.4x (+40%) chance of brain cancer? Vs sedentary peoples who have 2x chance of diabetes and +14% cardiovascular disease? (and sedentary means sitting + not exercising after work!).

I'd argue diabetes is easier to avoid through other life changes. I"m confused about whether "sitting" means "never exercising", and articles that talk about "sedentary" lifestyles are not very helpful.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1035250/

https://www.acpjournals.org/doi/10.7326/M14-1651