In regards to Mashiach Agent, the materialism part is simply not true. Long term Lakewood style learning after marriage is not a communal norm in the chassidishe velt. Chassidish men are expected to know when to go to work (when wife is pregnant/ parents stop paying your bills). Plenty of chassidishe women I know wear high heeled stilettos and fancy clothing that looks extravagant in nature. Upscale brands and feel a significant amount of pressure. A condo in BP today costs $1 million to buy. Families with 8+ children are living in condos with pressure to keep things extremely neat, have upscale things and stay thin after having kids. To say that Chassidishe people are not into material objects is not even remotely possible.
If simple lifestyle means trying to take a more natural approach in your connection to Hashem, with emphasis on intent as opposed to doing everything or else, then yes, chassidim are more simple.
Litvish is more likely to say “If you make three shidduchim in your lifetime, you will go straight to Gan Eden.” Almost implying that failure to make three shidduchim in your lifetime sends you straight to gehenom.
Chassidish is more likely to say “Making shidduchim helps men fulfill the mitzvah of pru ur’vu and as a shadchan, you are Hashem’s agent in helping a man fulfill that mitzvah”. Implying that you should want to help other people serve Hashem and fulfill mitzvos.
Also, for the record, not all chassidishe married women shave their heads.