If you tell Pep about about invincible, he will probably laugh since it will
never happen again in the EPL; Liverpool was the only club that came close, but we all know how that ended. With VAR and all of the new football rules, it will be difficult for any club to achieve this presently.
Don't say "never," because records are meant to be broken, not laughed at, and since it already happened in the Premier League, it will only take some time before another team does it again in the Premier League.
Bayer Leverkusen did it last season in the Bundesliga—51 games unbeaten in a row in all competitions.
Celtic FC did it in the 2016–2017 season.
Juventus and AC Milan have done it in the Série A.
Ajax has also done it in the Dutch League.
Arsenal is the only 'Invincibles', yes, but that season was actually far from the record in points won.
No matter how you try to say it, we are still the only team with that record in the EPL. Any other team with a record of coming close doesn't count. Arsenal has come close to winning the EPL twice recently, but it still doesn't count as a trophy in our trophy room, as many would say.