That tweet would have been a valid complaint if "better featured" or "fully featured" would have been the first two words in that tweet (if character limit allowed it). WP has always had Office. The complaint should be the quality or features between the two different platforms of Office. If anyone who didn't know any better reads that tweet is going to think WP doesn't have Office at all. And if I were Joe and read that tweet, I would think the author of the tweet doesn't know what he's talking about. Phone sales dopes already do enough damage spreading false truths about WP, we shouldn't help them out. When tweeting MS staff, especially executives, it should be important to get the facts correct. If we're lucky enough for execs to actually pay attention to the tweet (or email or facebook post) it's going to be for about 3 seconds.
Just my $.02
But agree that in any regard, WP should be included in those updates/improvements at the same time as iOS/Android. The reason they don’t is because they see users of iOS and Android as customers. The fact that those customers are using a competing platform is a distant second. It’s smart business considering the market share. I don’t like it either but I totally understand.