If the devs want the tab key to work as an indent, so be it. I've just started doing some formal writing recently that requires first line indention. I'm also traveling a lot. Writing in Evernote is convenient across a desktop, a Chromebook, and a phone. It is my go-to for most everything. However, I'm so used to the tab key working as a tab in every other program I use that I'm ready to punch my screen every time I try to tab in Evernote and shift my whole paragraph.
The file attachment recommendation is not mine, btw. Attaching a file with the active content defeats the purpose of using Evernote. It requires the file to be downloaded, edited, and reuploaded to Evernote. Evernote allows the user to work anywhere. If the user could use Word or some other writing program anywhere then the user would not need Evernote.
If I've come across as angry, I apologize. I'm frustrated at the tool. If I wanted an paragraph indent, I would use a paragraph indent. The paragraph indent and the tab key are entirely different functions, and I do not understand why Evernote works differently. Especially when the tab key works as expected within the text body, just not at the beginning of the paragraph.