you may say that, but, finding 1 bug in a" 1 month content" update 6 times, is much easier and less tiresome than finding 6 bugs in a single "6 month long content" update.
and i would even advocate, it will be faster to fix as well.
and that's also ignoring how something may be broken, fixed, but the fix breaks something else that was partially broken, but unoticed. this will always be a risk, but with a bigger content update, its not only higher chance to happen, but also harder to detect and fix.
there have been many cases here where the devs tried to make something, ended up breaking stuff, and going back and forth trying to figure out what is broken was too much and they gave up.
i still remember game of moans went through it. they did ALOT to try and give their game more quality, but it ended up a mess, instead of fixing it, they did the basic and moved on, but each new update was a shittier show than one before, when they decided to stop and try to fix it up they gave up because the work was too much. and because the quality was so poor, they werent able to gather the patreons to support the amount of work they did.
so while at first it may look like a preference thing, history has shown that trying to do too much at once will make it harder on yourself. even if you use the same amount of time.