Reasons matter a lot! Sometimes people vote on something without fully understanding what it is they are voting on. SWAMT is just trying to make sure it's not for something squidly doesn't understand from the TA. Every voter deserves to have any and all items to be voted on exlpained to them. They should also be made aware of possible outcomes if the way you vote succeeds.
For example, no one would ever vote to have their taxes increased, but politicians may disguise a tax increase with a road repair or upgrade project of some sort and they advertise it as such to sell it to those unknowing of the consequences, so those who have more details of the situation try and spread the word to make sure everyone understands, clearly, of what the outcomes could or will be. So yes, a persons reason does matter.