I guess recap episodes are just kind of a "thing" in modern Ultraman shows? Obviously the "next time" preview in last week's ep made it clear that's what this one would be, but reading around a bit it sounds as though episodes like this are pretty much standard, rather than just taking a break like American shows do a lot of weeks, or having a fun run of uninterrupted "normal" episodes as with UK shows.
Either way, since all the new monsters they've had in this show so far have been awesome I was ok with watching those fights again!

I will say though that the preview for it kinda made out like it was going to have just a *little* more story than it did, with the whole "a TV director narrows in on the origins on the kaiju?!" thing, which never even came remotely close to happening. But for what it was it was still cool.
Given the way it started though, I was also thinking that maybe there'd be a bit more discussion/speculation about Blazar's origins and why he keeps showing up to fight monsters all the time. But they pretty quickly settled into the (apparent) normal Ultraman thing of being like "oh, what's this strange alien giant that's appeared?!" initially, and then just being totally cool and not at all suspicious every time he appears after that.
I saw some people saying there were apparently some meta jokes about previous recap episodes and stuff, but I've not watched nearly enough Ultraman to pick up on things like that. But speaking of watching Ultraman, I did think it was really cool that only last week did I watch the episode of Ultraseven featuring Alien Cannan and now, after an apparently 56 year-long absence, they'll be returning in next week's episode!

That's some really great timing on that!