Yes they are misleading. An original burger was a Hamburger. Its name has nothing to do with ham or any other meat. It is a patty made of ground beef which originated in Hamburg, Germany. In the same way a variety of sausage originated in Frankfurt and is called a Frankfurter. So it is not a Ham-burger, it is a Hamburg-er. So to call a patty made of anything else a "burger" is simply wrong. There cannot be a beefburger - it is a Hamburger. As far as I know, there is nowhere called Beefburg. I also don't recall a town named Veggieburg.
Sausages originated from efficiencies in butchery and were originally made to use the cuts of meat which would otherwise have been discarded. So sausages are made with meat.
What I don't understand why vegetables have to be made to look and sound like meat dishes. Here's one example:
https://www.tesco.com/groceries/en-GB/products/254972122?sc_cmp=ppc*GHS%20-%20Grocery%20-%20Repeat%20&%20DS*PX%20%7C%20Shopping%20GSC%20%7C%20Actives%20%7C%20Top%20Offers%20%2B%20Generic*R%20%26%20DS%3A%20F%26D%3A%20Free%20From%3A%20Frozen%20Food%20-%20Top%20Offers*PRODUCT_GROUP254972122*=&ds_rl=1116322&gclid=CjwKCAjwlbr8BRA0EiwAnt4MTkEzfd4CWe_3wOFlmJODSbKzGX4z6Oh-_8VzxWPWx_46GMEPKoVWsxoCyi4QAvD_BwE&gclsrc=aw.ds&selectedUrl=https%3A%2F%2Fdigitalcontent.api.tesco.com%2Fv2%2Fmedia%2Fghs%2Fc7cd8bc8-0b7e-47f4-b6c4-0e01f7fbaec9%2F807c14c6-68a5-46d9-af7e-3b5cbcd15a9a.jpeg%3Fh%3D540%26w%3D540
Sorry for the long link, but it shows Tesco "Meat free Meat style burgers". If they're meat free, why make them "meat style"? Is it because vegans and vegetarians hanker after meat? It's about as daft as alcohol free beer and wine.
Here's another:
https://lovingitvegan.com/vegan-steak/
Vegan "steak". Description: "Tender, juicy and flavorful vegan steak! Perfectly spiced and looking remarkably like the ‘real thing’ ". But, er.. not the "real thing" because steak is a cut of meat. Why make vegetables look and sound like meat? Just call it "Compressed Vegetable Slurry". Doesn't sound too appetising but that's what it is. It's not steak.
I've even seen "Vegetarian Fish & Chips" on offer in a gastro-pub. Intrigued, I looked at the details. The "Fish" was fried cheese (to which many people, me included, are allergic).
Absolutely ridiculous. Rant over!