In some cases, a little bit of research can find records, which can then lead to more records. Once you find sources for the correct last name at birth then you can coordinate with the profile manager to change it.
Take, for example, https://www.wikitree.com/wiki/Umn-16
She really needs more sources like https://familysearch.org/ark:/61903/1:1:MDQP-8KK
And this one
Tennessee Death Records, 1914-1963," database with images, FamilySearch(https://familysearch.org/ark:/61903/1:1:N9GR-8M4 : 9 March 2018), Martha Melvina Hebdon, 15 Mar 1914; citing Cemetery, Murfreesboro, Rutherford, Tennessee, v 45 cn 271, State Library and Archives, Nashville; FHL microfilm 1,299,628.
||Martha Melvina Hebdon|
||15 Mar 1914|
||Murfreesboro, Rutherford, Tennessee|
||16 Mar 1914|