13 y/o Golden with lesions

My 13 year old Golden Retriever has lesions on varying locations of his body (2 on abdominal cavity, 1 between his right eye and ear, etc.). The growths continue to grow with the largest being about 1cm above the skin.

I saw the first lesion about 5 years ago on his left front leg. It initially looked like an engorged tick, but when I tugged on it, I realized it was a growth. The surrounding area had redness radiating from the growth. The vet opted to remove it and much of the surrounding area. He said the growth was very vascular but that he didn't know what it was. The pathology came back negative for malignancy. Could these be hemangiomas? Or the rarer angiokeratoma? I can take a photo and attach it if you'd like further information.

My Golden now has many more of these growths and because my guy is elderly, I've opted not to put him through any more surgeries to excise these growths. In your opinion, is this a bad decision on my part? Thank you for any advice you can give me.