Frank and Stove were two of my favorite players with Louisiana MBB during my time at UL. Great men. With Frank on the Pelicans' Summer League roster, it gives me a reason to tune-in to the action. Congrats to him! I'm excited to watch him play.
Germany does have one of the highest levels of play in Europe and you could make a case that top-to-bottom it is more well-rounded and competitive compared to other countries' domestic leagues, top-to-bottom. I wouldn't say it's the highest level, however. The top division in France just produced 2 NBA lottery picks (Victor Wembanyama #1 - Spurs & Bilal Coulibaly #7 - Pacers).
Luka Doncic came from Spain's top division with Real Madrid (#3 pick overall). FC Barcelona in Spain produced the #31 pick this past NBA draft (James Nnaji - Pistons).
The EuroLeague (basketball equivalent to the Champions League for you soccer fans) is a 34 game regular season/playoff (aside from domestic league-play) to determine "the best team in Europe" and happens yearly. Its past 4 champions were Real Madrid (Spain), Anadolu Efes (Turkey), Anadolu Efes (Turkey), and CSKA Moscow (Russia).
The Top 8 leagues in Europe are Spain, Turkey, Italy, Germany, France, Greece, Serbia, and Israel.
This isn't to diminish Stove's signing... having Cajun alums playing in any of the top-leagues of the countries listed above is a huge deal.
If you're a basketball fan, I encourage you to watch some of those Euro League games, they're fun to watch.