Remember, we are looking at this from our perspective. most riders now (unfortunately) go out for a near death experience on a Sunday morning. That’s it! They can ride in a spirited way knowing that modem tires, brakes, power and handling will get them out of the scrapes they shouldn’t have gotten into in the first place.
Retro bikes like this are based on the image but not the reality of life in the last century. 50’s and 60’s bikes were usually bought to go to work on, not a a weekend toy. Work is not something you would speed towards under any circumstances! The bike was your everyday transport, it carried a sack of spuds from the corner shop and your family on holiday if needed.
I have a classic 650 BSA. In its day it would do getting on for a ton, but not now. In her day my gran would be able to run a mile but she wouldn’t entertain that thought now.
Just give it some thought, adapt your style, and enjoy it for what it is.