it took me 8 steps to do
I'm not sure what you did, then, since Paste and Match Style is one menu choice or keypress away (Edit -> Paste and Match Style, or option-shift-command-V). Maybe two steps if you have to switch the new message from plain text to rich text. How you get the formatted text into the clipboard - whether by copying from TextEdit or another message or wherever - is not really relevant.
Microsoft outlook with the brush icon takes 3 steps.
Yeah, but Outlook is in significant ways incompatible with every other e-mail system on the planet. For example, consider its inability to correctly render HTML e-mails. But hey, at least you have the "paintbrush formatter!"