It’s a consideration because there’s zero reason for them to do so if it wasn’t in the original project plan. If they were developing the game for a while and then the Switch came out of nowhere, they aren’t gonna delay the entire game for a Switch port since that would be dumb, unless it wouldn’t take long to port or if it was early enough that it was feasible. Not to mention that after the Wii U, Capcom had no reason to automatically mark the next nintendo platform as one for DMCV of all things, while MM11 I think they always planned for the next Nintendo system even before the Switch was out since it’s a mainstay.
Even if this other Capcom game sold well, it’s an old port and wouldn’t really 100% reflect the chances of DMCV on switch. Rather, a more accurate way to test the waters would be with DMC 1-3 on Switch, but the cart size situation may make that impractical to release, so they could end up going with DMC4SE instead.
Then again in the case of DBFZ, if they feel like taking said risk and the game’s a long-term product where they can get it up to the other versions in terms of DLC parity and whatnot, they can still release it a bit later if they start work on it later. The question is whether or not a late port is even worth doing by then. It’s been slowing down lately due to the switch being out long enough for some developer planning for games to be made with switch ports in mind, but long-term games like Deep Down or FFVIIR are probably not gonna make it.