Research shows positive benefits in enfranchising 16 year olds to vote not negative benefits in Scotland.
Putting the argument forward that 16 year olds' "brains are still developing especially around hormones and school pressures" misses the fact that the 16 year old brain has the capacity and strength in decision making abilities compared to declining brain as people age. With that argument the opposite consideration would have merit for those aging ie "when brains stops developing, starts to decline and has a lot of pressures to deal (menopause anyone) with around hormones and pressures etc " they should be no longer able to vote. Putting the argument forward they have less knowledge of finance, still living at home, are not running a household etc. Independent living and managing finances is the criteria? So only adults who have knowledge of finance are running a household should vote? That would exclude many older people living in care homes et. How much knowledge of finance should people have to be able to vote and how should it be measured- should here be a test?
I suggest the criteria might be - does a 16 year old have capacity to make a voting decision and is it good for society and politics or adverse for society and politics. The research shows they do have interest, motivation and capacity can and it has positive benefits in Scotland.
There would be uproar if 70 year olds were threatened with having their vote taken away.