There is definitely a personal/cultural/local factor to this because I am extremely aware gelatin is from dead animals and have known this for as long as I can remember. The other items are things I only realised when I started excluding animal products. Except for maybe carmine?

But there, it's added to the list and so gross it is going behind a spoiler.

Something being toxic doesn't make shellac vegan.

Today I also trust a vegan stamp more than a vegetarian one when it comes to food labels. I also learnt that while vegetarian mainly meant strict vegetarian in sweden until the 1990s it wasn't so in the anglosphere. There was some rich biblical folks who wanted in on the word and diluted it to mean lacto-ovo-vegetarian in 1847.
I was not a wee lad in the 1840s that's for sure.
https://ivu.org/history-of-ivu.html?view=article&id=2622%3Ahistory-salt-dairy&catid=72

Regarding products from insects I don't really see how them having an exoskeleton makes it more okay.
Regarding lanolin I'd say its the same as with wool. The sheep that was sheared has been or will be slaughtered and buying the byproducts aid that reality.

That when I was a wee lad a vegetarian diet meant abstaining eating any animal products, not just skipping meat. Those that consumed biproducts added prefixes, f.e. lacto-ovo-vegetarians eating both dairy and eggs.
Veganism meant not using animal products at all, not just abstaining from eating them.