Injecting a dummy payload into an eccentric helicentric orbit which periodically crosses' Mars' orbit /= a Mars mission. The complexity and relevance to future human presence on Mars isn't close
(Though tbf the choice of launch vehicle isn't that relevant to whether the ESCAPADE mission succeeds, and missions involving Mars flybys like Hera which are lot more serious than the Tesla one have been launched on SpaceX rockets)
If injecting a payload into an eccentric heliocentric orbit doesn't count, then why does injecting a payload into MEO count, just because that payload is then capable of getting to Mars from there? BO didn't launch it to Mars, they launched it to orbit, and ESCAPADE is now getting itself to Mars.