That chart doesn’t really apply to this subject. Currency exchange is based on the relative value to other currencies, not itself. So this is a good thing for importers, bad for exporters. For the average consumer it’s good, but if your job depends on exports it’s not so good.
Of course it applies.
To say it doesn't is an elitist view.
The subject is "a stronger dollar", isn't it?.
If the dollar will buy more rubles or drachmas but less bacon and bread you might consider it stronger but people shopping for food instead of rubles wouldn't.