Only if you made absolutely sure that the battery was secured tightly - from the same article. Out of the 200M+ iPhones that Apple sells every year, how many people do you think wouldn’t put the battery and the cover on perfectly?
The same applies to gluing the rear cover back on, except instead of simply ensuring you've applied enough pressure and the gasket is in good condition, you now need to check that you've soldered the battery properly, positioned the glue correctly, heated the glue enough that it melts but doesn't fry your phone, and applied enough pressure evenly.
Well you don’t have to do anything. Spend $69 - $89 and let an Apple certified repair company to replace it and if they do something wrong, it’s covered under warranty.