If you ever get the chance to ride a forty + year old BSA group triple its pretty obvious they aren't a modern in any sense of the word. (the first ones came out within 5 years of the A10 ceasing production so getting close to 50 years old now)
I love mine

but it has all the "character"

of any sixties machine and is pretty crude if you hop off anything made in the last 25 years.
Its not a bike you ignore carrying a full toolkit anywhere

Where it might be arguably modern; is that its extremely complicated to work on compared to an A10, with three 626 concentrics to synchronise, an additional layer of engine cases

A motor that needs to be well assembled to be reliable and capable of magic when it is.
I've retrofitted mine with a T160 electric leg and boy were the lads at last weekend beesa run jealous
Modern though? I don't think so.