Google Sheets overrides the original data. If you want to use full names later, copy the rows, paste them to another column or sheet, and run the Split text to columns function.

Text wrapping in Google Sheets also lets you use the space in your spreadsheet more effectively, as you don't have to widen the columns individually to accommodate lengthy text.

We’ll show you how to add columns in Google Sheets, including how to insert a single column to the left or right and how to add multiple columns to your sheet.

Learn how to use the Text to Columns options to split comma seperated text in Microsoft Excel. You can do the same in Google Sheets as well.