I’ll throw in my POV here. Static ads/creatives barely work anymore. There’s very little traction on such ads. So, it is mostly video ads that need to go out along with a side thumbnails, etc.
Print ads and other off line collaterals are almost insignificant in number for most D2C, app/internet based orgs. Therefore, when hiring a graphic designer, video editing skills is added on the JD. It is a huge plus, if not a mandatory skill.
I’ve been hiring for this role with such skills - honestly, it is not about over-working someone. It is mostly about keeping the role well engaged, occupied and even relevant. There’s no harm in upskilling if you already have access to Creative Cloud.