Yep, that’s the idea. Alternatively, you can create variables for common conjugations. Depending on how often you are using conjugated verbs, you might find variables easier.
For example, you could create friend_s
where friend_s = "s"
when the friend is binary and friend_s = ""
when the friend is non-binary.
Then, any time you use a verb that drops the s in the plural, you just write:
${friendhe} read${friend_s} and write${friend_s} every day.
I personally find this easier than multireplace if you have a ton of gender-variable NPCs.
More code examples: