Dryer vent: proximity to electrical wires
In my personal opinion, this type of duct is NEVER a good idea for a dryer vent. 

Lint sticks to the inside much more than smooth metal.

It's virtually impossible to clean effectively, without damaging the duct.

How long do you think it will last (contain the flames) when the lint inside catches fire?

Solid, smooth metal is the only sensible choice. Making it as short as physically possible is also sensible. Long, complex dryer vents are just an invitation to problems.

Having it touching the wires is likely to overheat that portion of the wires each time the dryer operates, so at minimum providing some insulation between the two would be better.