I'd say definitely, and I've been very critical of the game's lack of meaningful new content. The core gameplay is genuinely better than ever, and this is going to be the most supported and, probably, most active game of the series. What's leading people to doubt its worth is how it looks when viewed through the lens of someone with substantial experience with the series.
For instance, the game comes with 12 maps. That, by itself, is a really very decent number for a new shooter at launch (Halo: Infinite came with just over half that IIRC). However, only 5 of those 12 maps are actually new, so those who haven't played the series before are going to have a disproportionately new experience compared to those who have.