"Is there a plaintext version..."
Yes. But you have to make it yourself from some XML. Example of a script to do that (^M means insert a CR. Ctrl-V then Ctrl-M. Or just \r if you are using a GNU sed):
#!/bin/sh
test $# -gt 0||exec echo usage: $0 proto://nameofBloggerblog.domain.tld;
HTTPCLIENT=curl;# popular example only, not an endorsement of cURL;
HTMLBROWSER=firefox;#popular example only, not an endorsement of Firefox
a=$($HTTPCLIENT $1|exec sed 's/\\046/\&/g;s/\\46/\&/g;s/\\075/=/g;s/\\75/=/g;/targetBlogID/!d;s/.*targetBlogID=//;s/&.*//');test ${#a} -gt 0||exit;
$HTTPCLIENT https://www.blogger.com/feeds/$a/posts/default|exec sed 's/^[0-9a-f]*^M//;s/</</g;s/>/>/g;s/&/\&/g;s/"/\"/g;1i\
<br><br>
s/<name>/<br><br>name &/g;
s/<uri>/<br>uri &/g;
s/<generator>/<br>generator &/g;
s/Blogger//;
s/<id>/<br>id &/g;
s/<published>/<br>published &/g;
s/<email>/<br>email &/g;
s/<title type=.text.>/<br><br>&/g;
s/<openSearch:totalResults>/<br>total results &/g;
s/<openSearch:startIndex>/<br>start index &/g;
s/<openSearch:itemsPerPage>/<br>items per page &/g;
s/<updated>/<br>updated &/g;
s/<thr:total>/<br>thr:total &/g;
s/<\/feed>/&<br><br><br>/;
s/^M*/<br>/;
' |exec tr -cd '\12\40-\176' > 1.htm;
$HTMLBROWSER file:///1.htm;