Great point!
I believe the answer is yes, people who use bridges will now use two of them by default (if they have at least two configured).
Proposal 271 has all the gritty details of the new (as of Tor 0.3.0, in 2017) guard design:
https://gitweb.torproject.org/torspec.git/tree/proposals/271-another-guard-selection.txt
(The goal of the prop271 guard design was to somehow avoid the attack where an adversary who controls your local network blocks connections to every guard in the consensus except the one(s) they control. The way the design works is that you grab a pretty small set of possible guards (dozens), and then you only choose your guard out of that set, and if you run out, you fail closed. Bridges re-use the same design, not because it is a great idea for bridges, but because it’s what the code does.)