sending xlm to electrum wallet

electrum confirmed within 5 blocks, I had a 1BTC transaction confirmed within a couple of hours for a $0.50 fee. What exactly is the huge issue with "full blocks"?

Abstract: On December 27, commentators reported on social media that a malicious group hacking the cryptocurrency wallet Electrum had stolen nearly 250 bitcoins (about $937,000). The attack was later confirmed by Electrum, which created a fake version of the wallet to trick users into providing password information. "Hackers set up a bunch of malicious servers," Reddit user u/normal_r.

electrum official website, cryptocoin mining software website

According to Bleeping Computer, the Bitcoin wallet app Electrom was on GitHub on May 9th, accusing a phishing product called Electrum Pro of stealing a user's seed key and registering a domain name called electrum without Electrum's permission. The Electrum team noted that there was a piece of code indicating that the counterfeit product might have taken the user's seed key and uploaded it to the electrum. Affected users should transfer funds from Bitcoin URLs managed by Eletrum Pro.