I think the modern writers have forgotten that some of those gimmick episodes of TOS happened because they had a shoestring budget and had to reuse whatever cowboy or city set was available.
I'm frustrated that for a moment it seemed like Spock couldn't stand to be single. La'an ends their casual thing and he soon after calls his ex. It's a bit of a bad look. Like he got with La'an to forget Chapel, then called T'Pring to help forget La'an.
It just hit me the wrong way.
Though I rationalized it by remembering that Spock was hinted to have been a ladies man in ToS before he became all about the science and logic.